How many tiers are there in the Panchayati Raj structure?

Three

The correct answer is Option 2 - Three

The Panchayati Raj structure in India consists of three tiers:

Gram Panchayat at the village level.
Panchayat Samiti at the intermediate level (also known as Block or Mandal Panchayat).
Zila Parishad at the district level.

These three tiers represent the local self-government system in rural areas and are responsible for planning, implementing, and monitoring various developmental activities at their respective levels.