Concept:Hybrid varieties are created by crossing two genetically different pure lines to improve yield and other traits. Each hybrid is specific to a particular crop.Explanation:Pusa Hybrid 4 is a hybrid variety developed by scientists at the Indian Agricultural Research Institute, New Delhi. It belongs to tomato, not potato, banana, or papaya. Hybrid crops like this are carefully bred for better performance. However, seeds from hybrids must be purchased fresh each year because the next generation does not retain the same traits. Other popular hybrid varieties in India include: wheat – Sonalika and Kalyan Sona; rice – Jaya and Ratna; and cowpea – Pusa Komal. Thus, Pusa Hybrid 4 is exclusively a tomato hybrid.Answer:B. Tomato