Explanation:

- Option 1: Guavas are widely cultivated in several Indian states, including Telangana, but not specifically known as the primary region. This option is somewhat misleading.

- Option 2: Himachal Pradesh is famous for its apple production, especially the Kashmiri apples.

- Option 3: Nagpur is renowned for its succulent oranges, often referred to as "Nagpur oranges."

- Option 4: While Kerala produces bananas, the state is more renowned for its coconuts. Maharashtra is more synonymous with large-scale banana farming.

Correct Answer: Option 4 - Banana - Kerala is incorrectly paired.