Option 1 -> Export of merchandise is part of the current account as it represents trade in goods.
Option 2 -> Remittances received from Japan fall under current account transfers.
Option 3 -> Purchase of IT services from the USA is recorded in the current account under trade in services.
Option 4 -> Purchase of shares of a foreign company by an Indian resident is a capital account transaction.
Hence, Option 4: Purchase of shares of a foreign company by an Indian resident -> The capital account (or financial account) records transactions involving financial assets and liabilities between residents and non-residents. When an Indian resident purchases shares of a foreign company, it represents an outflow of capital for portfolio investment abroad. This is a capital/financial account transaction, while exports, imports of services, and remittances are all current account items -> correct