The Nilgiris district is known for the cultivation of:

Citrus fruits
Stone fruits (peach, plum)
Tropical fruits
Berries

The correct answer is: c) Tropical fruits.

The Nilgiris district is a mountainous region in the Indian state of Tamil Nadu. It is known for its cool climate, tea plantations, and wildlife sanctuaries. The district is also home to a variety of tropical fruits, including bananas, mangoes, pineapples, and jackfruit.

Citrus fruits (a) are not as common in the Nilgiris district as tropical fruits. Stone fruits (b) are not grown in the Nilgiris district. Berries (d) are not as common in the Nilgiris district as tropical fruits.

Here are some additional details about the tropical fruits that are grown in the Nilgiris district:

  • Bananas are a staple food in the Nilgiris district. They are grown in large quantities and are used in a variety of dishes.
  • Mangoes are another popular fruit in the Nilgiris district. They are grown in a variety of colors and flavors.
  • Pineapples are a refreshing fruit that is grown in the Nilgiris district. They are often used in juices and desserts.
  • Jackfruit is a large, fleshy fruit that is native to the Nilgiris district. It is a popular ingredient in curries and stews.