Step 1: Define the exchange rate direction:
If exchange rate = Rs. per US$ rises (e.g. Rs.80/$ → Rs.85/$), it takes MORE rupees to buy one dollar — the rupee has weakened.
Step 2: Think from the foreign buyer's side:
A foreigner holding dollars can now buy more rupees per dollar than before, so an Indian good priced in rupees costs the foreigner fewer dollars — Indian exports look cheaper abroad.
Step 3: Think from the domestic buyer's side (to rule out B, C, D):
An Indian importer now needs more rupees to pay for the same dollar-priced import, so imports become costlier, not cheaper — confirming exports (not imports) are the ones that get cheaper.
Final Answer:
Option A.