The correct answer is - Eurasian continent.
The Indian tectonic plate had been moving throughout the geologic past from the eastern coast of Africa, through what is now the Indian Ocean, and met its final destination in the southern part of the Eurasian tectonic plate. It collided with it, thus creating a convergent tectonic boundary, and push into the bigger Eurasian plate. Because of the big pressure between the two plates, the land around the collision boundary started to lift up, and as the time was passing it was becoming bigger and bigger, thus eventually creating the highest mountain range in the world, the Himalayas.
