The correct answer is: a) Southwest monsoon (June-September).
Andhra Pradesh receives most of its rainfall during the southwest monsoon, which is a seasonal wind that blows from the southwest towards the northeast during the summer months. The southwest monsoon brings heavy rains to the state, which are essential for agriculture and other economic activities.
The northeast monsoon, which blows from the northeast towards the southwest during the winter months, does not bring as much rain to Andhra Pradesh. The winter months are generally dry in the state.
Rainfall is distributed throughout the year in some parts of Andhra Pradesh, but the majority of the state’s rainfall occurs during the southwest monsoon.