Explanation:

The correct answer is option 'B' - Rabi.

What is a Rabi Crop?

- Rabi crops are the crops that are sown in winter and harvested in spring.
- These crops require a cool climate for germination and growth.
- They are usually sown in the months of October and November and harvested in March and April.
- Rabi crops are also known as winter crops.

Why is Apple a Rabi Crop?

- Apple is a fruit that belongs to the Rosaceae family and is grown on apple trees.
- Apple cultivation requires a specific climate and temperature for optimal growth and development.
- Apple trees require a cool climate during the winter season for proper dormancy and chilling hours.
- Chilling hours are the number of hours at a temperature below 7°C that is required for the apple tree to break dormancy and produce flowers.
- This is why apple trees need a period of cold weather, which is provided by the winter season.
- Therefore, apple cultivation is considered a Rabi crop as it requires a cool climate for proper growth and development.

Conclusion:

In conclusion, apple is classified as a Rabi crop because it requires a cool climate for proper growth and development. Rabi crops are sown in winter and harvested in spring, and apple trees need a period of cold weather for dormancy and chilling hours.

This option is b because apple grows in the cold season which is called the Rabi season.