The correct answer is: a) Backyard homesteads.
Guava, jackfruit, and papaya are tropical fruits that are commonly grown in backyards and small farms in tropical and subtropical regions. They are not typically grown in commercial orchards or hilly plantations. Riverine areas are also not ideal for growing these fruits, as they require well-drained soil.
Guava is a small, round fruit with a thick, green skin. The flesh of the guava is white or pink and is often juicy and sweet. Guavas are a good source of vitamins C and A, as well as fiber.
Jackfruit is a large, green fruit that can weigh up to 80 pounds. The flesh of the jackfruit is yellow or orange and is often fibrous and stringy. Jackfruit is a good source of vitamins C and A, as well as potassium.
Papaya is a large, yellow fruit that is often pear-shaped. The flesh of the papaya is orange or red and is often sweet and juicy. Papayas are a good source of vitamins C and A, as well as fiber.