Which one of the following is not a type of commercial agriculture?

Which one of the following is not a type of commercial agriculture?

Dairy farming
Grain farming
Livestock ranching
Intensive subsistence agriculture
This question was previously asked in
UPSC CDS-1 – 2020
The correct answer is Intensive subsistence agriculture. This type of farming is primarily aimed at producing food for the farmer’s own consumption or local needs, with limited surplus for commercial sale.
Commercial agriculture is characterized by production for sale in the market, often on a large scale and with the use of modern technology.
Dairy farming, grain farming (like wheat or corn in large farms), and livestock ranching are all examples of commercial agriculture where products are raised for sale and profit.