But in 1987, the government of India for the first time got directly involved in the Sri Lankan Tamil question and send its IPKF. What does IPKF stand for?

Indian Peace Keeping Force.

The correct answer is Option 3 - Indian Peace Keeping Force.

IPKF stands for Indian Peace Keeping Force.

The government of India has from time to time tried to negotiate with the Sri Lankan government on the Tamil question. But in 1987, the government of India for the first time got directly involved in the Sri Lankan Tamil question. India signed an accord with Sri Lanka and sent troops to stabilise relations between the Sri Lankan government and the Tamils. Eventually, the Indian Army got into a fight with the LTTE. The presence of Indian troops was also not liked much by the Sri Lankans. They saw this as an attempt by India to interfere in the internal affairs of Sri Lanka. In 1989, the Indian Peace Keeping Force (IPKF) pulled out of Sri Lanka without attaining its objective.