Explanation

Cassava and beans are a good pair of foods for body building because they provide a combination of complex carbohydrates and protein, which are essential for building and repairing muscles.

Other choices do not fit as well. Each has a reason why it does not answer the question correctly. Understanding why wrong answers are incorrect helps reinforce the right answer.

This knowledge is important for Home Economics. It helps in daily life and builds practical skills for managing homes and families effectively.