A nation is a lender to other countries. It means :

Surplus current account

The correct answer is option (1) : Surplus current account

Current Account is in balance when receipts on current account are equal to the payments on the current account. When a country has a current account surplus, it earns more foreign exchange from exports and other current receipts than it spends on imports and payments. The excess funds are lent or invested abroad, making the country a net lender to other nations. Thus, a surplus current account means that the nation is a lender to other countries and a deficit current account means that the nation is a borrower from other countries.

Current Account Surplus: A surplus occurs when a nation’s total exports of goods, services, and transfers are greater than its total imports. This means the country is earning more foreign exchange than it is spending.

The "Lender" Connection: Because the nation has extra earnings (a surplus), it uses that excess capital to invest in or lend to other countries (e.g., buying foreign bonds, providing loans, or acquiring assets abroad). Essentially, a current account surplus must be balanced by a capital account deficit (outflow of capital), making the nation a net creditor or lender.