The right option is; D.Trawling
Trawling is the method of commercial fishing that tends to produce excessive bycatch.
Trawling is a method of fishing in which a trawl (fishing net) is dragged through the water at a specific depth behind one or more trawlers. Trawling is usually used for commercial fishing, and it tends to produce excessive bycatch; a condition in which non target marine organisms such as seabirds are incidentally caught, while catching target species such as crabs and fish.
Answer: D. Trawling
Trawling is a method of commercial fishing that tends to produce excessive fishes by catch. In this method of fishing, the trawls or net are released by the boat and the boat is moved ahead. The fishes and other valuable aquatic animals are collected inside the net or trawl. Trawling is done to collect fishes from both mid water and sea bottom.
