The correct answer is: b) Jaal.
Jaal is a traditional fishing method used in Assam. It is a type of net that is made from bamboo and jute. The net is cast into the water and then pulled back to shore, trapping the fish inside.
Angling is a method of fishing that uses a rod and line with a baited hook. The angler casts the line into the water and waits for a fish to bite.
Trapping is a method of fishing that uses traps to catch fish. There are many different types of traps, but they all work by trapping the fish inside.
Trawling is a method of fishing that uses a large net that is dragged along the bottom of the sea. The net catches fish and other marine life.
Jaal is the most common fishing method used in Assam because it is a traditional method that has been used for centuries. It is also a very effective method of fishing.