The type of climate that supports agriculture in Karnataka:

Tropical
Arid
Subarctic
Temperate

The correct answer is: A) Tropical.

Karnataka is a state in southern India. It has a tropical climate, with hot and humid summers and mild winters. The average temperature in Bangalore, the capital of Karnataka, ranges from 15°C (59°F) in January to 30°C (86°F) in May. The state receives an average annual rainfall of 750 mm (30 in).

The tropical climate of Karnataka is ideal for agriculture. The state is home to a variety of crops, including rice, sugarcane, cotton, and coffee. The state also has a thriving livestock industry.

Arid climates are characterized by low rainfall and high temperatures. These climates are found in deserts and semi-deserts. Arid climates are not suitable for agriculture, as there is not enough water to support crops.

Subarctic climates are found in the northern hemisphere, above the Arctic Circle. These climates are characterized by long, cold winters and short, cool summers. Subarctic climates are not suitable for agriculture, as the growing season is too short.

Temperate climates are found in the middle latitudes. These climates are characterized by moderate temperatures and rainfall. Temperate climates are suitable for agriculture, as there is enough water to support crops and the growing season is long enough.