The correct answer is: A) Gill nets.
Gill nets are a type of fishing net that is used to catch fish by entangling their gills. They are made of a fine mesh that is suspended in the water, and they are often anchored to the bottom of the river or lake. Gill nets are a very effective way to catch fish, but they can also be harmful to other marine life, such as turtles and dolphins.
Cast nets are a type of fishing net that is thrown by hand. They are made of a lightweight material, such as nylon, and they are often used to catch small fish. Cast nets are a relatively simple and inexpensive way to fish, and they are popular with both commercial and recreational fishermen.
Trawling is a type of fishing that involves dragging a net along the bottom of the ocean. Trawling nets are very large, and they can catch a wide variety of fish. Trawling is a very efficient way to fish, but it can also be harmful to the environment. Trawling nets can damage coral reefs and other sensitive marine habitats, and they can also catch non-target fish, such as dolphins and turtles.
Longlines are a type of fishing gear that consists of a long line with baited hooks attached. Longlines are often used to catch tuna, swordfish, and other large fish. Longlines can be very effective at catching fish, but they can also be harmful to the environment. Longlines can entangle marine mammals, such as whales and dolphins, and they can also catch non-target fish.
In Telangana, gill nets are the most commonly used fishing method. Gill nets are effective at catching a variety of fish, including carp, catfish, and tilapia. They are also relatively inexpensive and easy to use. However, gill nets can also be harmful to other marine life, such as turtles and dolphins.