WGU Global-Economics-for-Managers Exam Questions

According to Global Economics for Managers, firms should increase production when marginal revenue (MR) exceeds marginal cost (MC), making option C correct.

In this case, MR = $1,000 and MC = $600. Producing one additional unit generates more revenue than cost, increasing profit by $400. Rational, profit-maximizing firms should continue expanding output as long as MR > MC.

This decision rule applies across market structures, including monopoly, oligopoly, and perfect competition. The firm should stop increasing production only when MR equals MC.

Options A, B, and D would cause the firm to forgo profitable opportunities.

Thus, option C is the correct managerial response.

In Global Economics for Managers, monopolies arise when barriers to entry prevent competitors from entering a market. Two common barriers are control of a key resource and economies of scale, making options A and B correct.

When a single firm owns a unique or scarce resource, competitors cannot produce the good without access to that resource. Economies of scale create monopolies when one firm can produce at a lower average cost than multiple firms due to high fixed costs.

Options C, D, and E promote competition rather than monopoly.

Thus, options A and B correctly identify monopoly-creating barriers to entry.

An import tariff raises the domestic price of imported furniture, which reduces consumer surplus. Option A is correct. Consumer surplus is the difference between what buyers are willing to pay and what they actually pay. When a tariff increases the market price, consumers pay more and typically buy less. This reduces the benefit consumers receive from participating in the market. Domestic producers may gain producer surplus, and the government may collect tariff revenue, but consumers lose because prices rise and available choices may shrink. Option B is too weak because the standard tariff effect on consumer surplus is a decrease. Option C is wrong because tariffs change prices and quantities. Option D is the opposite of the expected effect. Tariffs redistribute welfare away from consumers.

In Global Economics for Managers, large international banks are identified as the primary and largest participants in the foreign exchange (FX) market, making option C correct. These banks serve as market makers, facilitating currency transactions for governments, corporations, institutional investors, and other financial entities.

International banks dominate FX trading because they possess extensive global networks, large capital reserves, and advanced information systems. They quote buy and sell prices for currencies, provide liquidity, and execute transactions on behalf of clients. Much of the FX market operates through interbank trading, where major banks trade currencies among themselves.

While central banks (option B) are influential participants---particularly through monetary policy and intervention---they do not account for the majority of daily trading volume. Multinational firms and individual traders participate primarily for hedging or speculative purposes, but their transaction volumes are much smaller.

Understanding the role of international banks helps managers assess exchange rate movements, liquidity conditions, and transaction costs in global markets. Therefore, option C correctly identifies the largest participants in the foreign exchange market.

A democracy gives citizens the right to elect representatives who govern on their behalf. Option D is correct because political participation, representative government, accountability, and civil liberties are core features of democratic systems. Democracies generally have institutional checks and balances, rule of law, and mechanisms for peaceful leadership change. These features can reduce arbitrary government action and improve transparency for businesses. Option B describes totalitarianism, where one person or party holds absolute political control. Option C describes a political risk that may occur in some countries but is not a defining feature of democracy. Option A is also incorrect because democracies usually reduce extreme political uncertainty compared with authoritarian systems, although policy changes can still affect firms. The defining feature is citizen representation through elections.

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