Step 1: Understanding the tea gardens in Himachal Pradesh.
The Kangra Valley in Himachal Pradesh is famous for its tea gardens. The region has favorable climatic conditions for tea cultivation, making it the largest tea-producing region in the state.
Step 2: Analyzing the options.
- (a) Kangra: Correct. Kangra is known for its tea gardens, and it is the most famous tea-producing area in Himachal Pradesh.
- (b) Chamba: Incorrect. Chamba is not known for tea gardens; it is known for its beautiful landscapes and temples.
- (c) Hamirpur: Incorrect. Hamirpur is not a prominent area for tea cultivation.
- (d) Bilaspur: Incorrect. Bilaspur is also not known for tea gardens.
Step 3: Conclusion.
Kangra is the region in Himachal Pradesh known for its tea gardens, making option (a) the correct answer.
Final Answer:} Kangra.