Important WGU Global Economics for Managers Exam Questions

Answer: B

Explanation:

In Global Economics for Managers, opportunity cost is defined as the lost potential from pursuing one activity at the expense of another, given the available alternatives, making option B correct. Opportunity cost reflects the value of the next best alternative that is foregone when a decision is made.

This concept is central to economic decision making because resources---such as time, capital, and labor---are scarce. Choosing one option necessarily means giving up another. Opportunity cost includes both monetary and non-monetary factors and applies to individuals, firms, and governments alike.

For firms, opportunity cost may involve using capital for one investment rather than another. For consumers, it may involve spending money on one good instead of saving it or purchasing a different good. Managers must account for opportunity costs to make efficient and rational decisions.

Option A refers only to explicit costs, which are incomplete. Options C and D describe different cost and benefit concepts.

Thus, option B correctly defines opportunity cost.

Answer: C

Explanation:

In Global Economics for Managers, a tariff is defined as a tax imposed on imported goods, and one of its most direct and predictable effects is that it raises the domestic price of the affected product. As a result, tariffs encourage consumers to reduce their consumption, making option C the correct answer.

When a tariff is applied, imported goods become more expensive relative to domestically produced alternatives. This price increase shifts consumer behavior: buyers either purchase fewer units overall or substitute toward domestic products or other alternatives. Because demand curves slope downward, higher prices lead to lower quantities demanded, which explains why consumer consumption falls after a tariff is imposed.

Option A is incorrect because tariffs reduce, not increase, the quantity of imports. Higher import prices discourage foreign suppliers and domestic buyers from trading. Option B is incorrect because domestic quantity demanded falls due to the higher price, even though domestic quantity supplied may rise. Option D is incorrect because tariffs raise the domestic price above, not below, the world price.

Global Economics for Managers emphasizes that tariffs redistribute economic surplus. Consumers lose surplus due to higher prices and reduced consumption. Domestic producers gain surplus because they face less foreign competition and can sell more at higher prices. Governments gain tariff revenue. However, these gains do not fully offset consumer losses, resulting in deadweight loss and reduced overall economic efficiency.

For managers, understanding the consumption-reducing effect of tariffs is essential when evaluating pricing strategies, demand forecasts, and market entry decisions in protected markets. Tariffs distort market signals and often provoke retaliation, further affecting global trade flows.

Therefore, option C accurately describes a true and fundamental effect of tariffs in international trade economics.

Answer: A

Explanation:

In Global Economics for Managers, demand is said to be elastic when the quantity demanded responds substantially to changes in price, making option A correct. Elastic demand occurs when consumers are highly sensitive to price changes, often because close substitutes are available or the good represents a significant portion of income.

When demand is elastic, a small percentage change in price leads to a larger percentage change in quantity demanded. This relationship has important implications for pricing and revenue decisions. In such cases, price and total revenue move in opposite directions---a price decrease increases total revenue, while a price increase reduces total revenue.

Option B is incorrect because total revenue does not increase with price changes in both directions. Option C is false because price and total revenue move in opposite directions under elastic demand. Option D describes inelastic demand, where quantity responds only slightly to price changes.

Managers must understand elasticity when setting prices, forecasting revenue, and designing marketing strategies. Therefore, option A accurately defines elastic demand.

Answer: C

Explanation:

In Global Economics for Managers, the fundamental profit-maximization rule states that firms should increase production when marginal revenue exceeds marginal cost, making option C correct.

Marginal revenue represents the additional revenue from selling one more unit, while marginal cost represents the additional cost of producing it. As long as MR > MC, producing additional units increases profit. Firms should stop expanding output when MR = MC.

Option A implies losses on additional units. Option B relates to cost efficiency, not profit maximization. Option D ignores costs and therefore does not maximize profit.

Therefore, option C correctly identifies the condition under which firms should increase production.

Answer: B, E

Explanation:

In Global Economics for Managers, a market economy is characterized by decentralized decision making and reliance on market forces, making options B and E correct.

Option B is correct because Adam Smith, in The Wealth of Nations (1776), laid the intellectual foundation for market economies. He argued that individuals pursuing their own self-interest unintentionally promote the overall welfare of society.

Option E correctly identifies the ''invisible hand'', a central concept in market economies. Prices, supply, and demand coordinate economic activity without centralized planning. Firms decide what to produce based on profitability, and consumers decide what to buy based on preferences and prices.

Options A, C, D, and F describe command economies, where governments control production, pricing, and resource ownership---characteristics inconsistent with market economies.

Thus, B and E accurately describe defining features of a market economy.