The correct answer is: A. Arhar
Kewal and alluvial soil are suitable for growing arhar. Arhar is a type of legume that is grown in tropical and subtropical regions. It is a major source of protein and fiber for many people around the world. Arhar is a drought-tolerant crop that can grow in a variety of soils, including kewal and alluvial soil.
Khesari is a type of legume that is grown in India and Nepal. It is a major source of protein and fiber for many people in these countries. Khesari is a drought-tolerant crop that can grow in a variety of soils, but it is not as well-suited to kewal and alluvial soil as arhar.
Gram is a type of legume that is grown in many parts of the world. It is a major source of protein and fiber for many people. Gram is a drought-tolerant crop that can grow in a variety of soils, but it is not as well-suited to kewal and alluvial soil as arhar.
Masoor is a type of lentil that is grown in many parts of the world. It is a major source of protein and fiber for many people. Masoor is a drought-tolerant crop that can grow in a variety of soils, but it is not as well-suited to kewal and alluvial soil as arhar.