Where did India send troops to foil a coup attempt by mercenaries?

Maldives

The correct answer is Option 2 - Maldives

India’s ties with the Maldives remain warm and cordial. In November 1988, when some Tamil mercenaries from Sri Lanka attacked the Maldives, the Indian air force and navy reacted quickly to the Maldives’ request to help stop the invasion. India has also contributed towards the island’s economic development, tourism and fisheries.