Answer:
C) the inflation rate.
Explanation:
This article is refers to the currency exchange rate between the US dollar, the Japanese yen, and the euro.
Since the US dollar depreciated against the Japanese yen ($1 buys less yens), the price of imported cars increased. Since the US dollar lost value, American exports were cheaper, so they would naturally increase since they would be more attractive to foreign buyers. In the last part it also mentioned the euro and the similarities with the yen.