If the balance of payments of a country is adverse, which institution will help that country?

Help comes from the International Monetary Fund. The IMF's core role is to support international monetary stability, and it lends to member countries facing balance of payments difficulties, usually with conditions attached (India itself drew on IMF support in the 1991 crisis). The World Bank and the Asian Development Bank finance long-term development projects, and the World Trade Organization sets and enforces trade rules but does not lend money.