The correct answer is: B) Goat rearing.
Goat rearing is widely practiced in the dry regions of Karnataka because goats are hardy animals that can survive in harsh conditions. They are also relatively low-maintenance animals, which makes them a good choice for farmers who have limited resources. Goats are also a good source of meat, milk, and fiber.
Sheep rearing is also practiced in Karnataka, but it is not as common as goat rearing. Sheep are less hardy than goats and require more care and attention. They are also not as good a source of meat as goats.
Dairy farming is not as common in Karnataka as it is in other parts of India. This is because the climate in Karnataka is not ideal for dairy cows. The state experiences long periods of drought, which can make it difficult to provide enough water and fodder for dairy cows.
Poultry farming is also not as common in Karnataka as it is in other parts of India. This is because the climate in Karnataka is not ideal for poultry. The state experiences long periods of heat, which can make it difficult to keep poultry cool and comfortable.
In conclusion, goat rearing is the most common type of livestock farming in the dry regions of Karnataka. Goats are hardy animals that can survive in harsh conditions and are relatively low-maintenance. They are also a good source of meat, milk, and fiber.