The correct answer is: a) A wide variety of horticultural crops.
Arunachal Pradesh is a state in northeastern India. It is known for its rich biodiversity and potential for growing a wide variety of horticultural crops. The state has a tropical climate with high rainfall, which makes it ideal for growing a variety of fruits, vegetables, and spices. Some of the most popular horticultural crops grown in Arunachal Pradesh include pineapple, banana, mango, papaya, orange, lemon, lime, guava, jackfruit, litchi, and passion fruit. The state also produces a variety of vegetables, including cabbage, cauliflower, tomato, potato, onion, garlic, ginger, turmeric, and chillies. Arunachal Pradesh is also home to a number of spices, including cardamom, ginger, turmeric, and chillies. These spices are used in a variety of dishes, both in India and abroad.
Option b) is incorrect because Arunachal Pradesh is known for its rich biodiversity and potential for growing a wide variety of horticultural crops, not just tropical fruits.
Option c) is incorrect because Arunachal Pradesh is known for its rich biodiversity and potential for growing a wide variety of horticultural crops, not just limited types of vegetables.
Option d) is incorrect because Arunachal Pradesh is known for its rich biodiversity and potential for growing a wide variety of horticultural crops, not just primarily cereal crops.