Rabi crops are a type of agricultural crops that are sown in the winter season and harvested in the spring. These crops are well-suited for the winter season as they require relatively lower temperatures to grow and thrive. They are an important part of the agricultural cycle in India and are grown in regions with a winter season.

Among the options given, the correct answer is option 'D' - Peas. Peas are a Rabi crop and are typically sown in the winter months of October to December and harvested in February to April. Let's understand why peas are considered a Rabi crop in more detail.

1. Definition of Rabi Crop:
Rabi crops refer to the crops that are sown in winter and harvested in spring. These crops are dependent on the winter rainfall and have a longer growing season compared to Kharif crops.

2. Characteristics of Rabi Crops:
Rabi crops require a cool climate and shorter days for proper growth. They are generally sown in October or November and harvested in April or May. These crops include various cereals, pulses, oilseeds, and vegetables.

3. Peas as a Rabi Crop:
Peas are a type of legume that belongs to the Fabaceae family. They are considered a Rabi crop because they are sown in the winter season and harvested in the spring. Peas are well-adapted to cool weather conditions and can withstand low temperatures. They require a minimum temperature of around 10-15°C for proper germination and growth.

4. Sowing and Harvesting of Peas:
Peas are usually sown in the months of October to December, depending on the region and climatic conditions. They take around 120-150 days to reach maturity and are harvested in February to April. The pods of the pea plant contain the edible peas, which are harvested when they are fully developed and tender.

5. Importance of Peas:
Peas are a valuable crop due to their nutritional benefits and versatility in culinary applications. They are rich in vitamins, minerals, and dietary fiber. Peas are used in various dishes such as soups, stews, salads, and stir-fries. They are also processed and preserved for future consumption.

In conclusion, among the given options, peas are considered a Rabi crop. They are sown in the winter season and harvested in the spring. Peas have a longer growing season and are well-adapted to cool weather conditions. They are an important crop for both nutritional and culinary purposes.