Option 1 -> Autonomous receipts > autonomous payments indicates BOP surplus - this correctly defines surplus condition.
Option 2 -> Autonomous transactions are 'above the line' items, not below the line items.
Option 3 -> Autonomous transactions occur in both current and capital accounts, not just capital account.
Option 4 -> This describes accommodating transactions, not autonomous transactions.
Hence, Option 1: BOP is said to be in surplus if autonomous receipts are greater than autonomous payments -> Autonomous transactions are undertaken for profit motive or personal satisfaction (like exports, imports, FDI). They are 'above the line' items. When autonomous receipts exceed autonomous payments, it creates a surplus in BOP. Conversely, when autonomous payments exceed autonomous receipts, it creates a deficit requiring accommodating transactions (below the line items) to balance the BOP. -> correct