In this question, we are given a list of tourism events (List I) and a list of associated places (List II). We need to match the tourism event with its associated place and select the correct answer using the given codes.

Let`s analyze each option:

Option 1: A B C - 3 4 1

According to this option, Buddha Mahotsava is associated with Gaya, Sindhu Darshan is associated with Sarnath, and Virasat is associated with Keylong. This option is incorrect because Buddha Mahotsava is actually associated with Sarnath, not Gaya.

Option 2: A B C - 1 5 2

According to this option, Buddha Mahotsava is associated with Sarnath, Sindhu Darshan is associated with Leh, and Virasat is associated with Dehradun. This option is correct as all the associations match the given list of tourism events and associated places.

Option 3: A B C - 3 5 1

According to this option, Buddha Mahotsava is associated with Gaya (incorrect), Sindhu Darshan is associated with Leh (correct), and Virasat is associated with Keylong (incorrect).

Option 4: A