During which season is fishing banned in certain rivers of Assam to allow for breeding?

The correct answer is: b) Pre-monsoon season.

Fishing is banned in certain rivers of Assam during the pre-monsoon season to allow for breeding. This is because the water levels in the rivers are low during this time, and the fish are more vulnerable to being caught. The ban is in place from April to June, and it helps to protect the fish population.

The other options are incorrect because:

• Winter is not the best time for fishing because the water is cold and the fish are not as active.
• The monsoon season is not a good time for fishing because the water is too muddy and the fish are difficult to catch.
• The post-monsoon season is a good time for fishing, but it is not the best time for breeding because the water levels are high and the fish are more spread out.