Answer:
a. a depreciation of the home currency
Step-by-step explanation:
Floating exchange rate system is a system in which the exchange rates of any currency depends upon the forex market, basically the supply and demand force of the country in international trade.
Depreciation in home currency will make it cheaper for the country top export, as less payment need to be made for same goods by other country if the home country exports.
Imports will turn expensive, which shall decline imports.
Accordingly receipts will increase and payments will decrease, which shall result in re framing current account and the deficit shall be decreased and might be reversed into surplus.