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Answer (A) is correct . If the foreign currency weakens compared with the U.S. dollar, the U.S. dollar will have more buying power in the foreign company’s country. Thus, the foreign company will be able to sell more products than the U.S. company for the same amount of dollars.

Answer (B) is incorrect because A weakening foreign currency makes foreign-produced products cheaper per U.S. dollar.
Answer (C) is incorrect because A weakening of the foreign currency will decrease the foreign company’s prices relative to the U.S. company’s.
Answer (D) is incorrect because A strengthening U.S. dollar can buy more of a weakening foreign currency (i.e., products produced in that country), effectively increasing the price of U.S.-produced products in the foreign market.