The correct answer is: a) Rice.
Terrace cultivation is a type of agriculture that is used in mountainous areas. It involves building terraces on the sides of hills or mountains to create flat surfaces for growing crops. This type of cultivation is often used in areas where the land is steep and there is a lot of rainfall.
Rice is a type of grass that is grown in flooded fields. It is one of the most important crops in the world, and it is a staple food for millions of people. Rice is grown in many different parts of the world, including Meghalaya.
Wheat is a type of grass that is grown in dry fields. It is a major cereal crop that is used to make bread, pasta, and other foods. Wheat is grown in many different parts of the world, but it is not a major crop in Meghalaya.
Horticultural crops are crops that are grown for their fruits, vegetables, or flowers. They are often grown in small, intensive farms. Horticultural crops are a major part of the economy in Meghalaya.
Plantation crops are crops that are grown on large, commercial farms. They are often grown for their fibers, oils, or other products. Plantation crops are not a major part of the economy in Meghalaya.