Final answer:
The monsoon season in South Asia is associated with a reversal of winds, migration of the ITCZ, flash floods after dry periods, and summer rains due to low-pressure systems over the Himalayas; hence, all the given factors are correct.
Step-by-step explanation:
The associating factors to the monsoon season throughout South Asia include a variety of climatic elements that influence the monsoon dynamics in the region. This includes:
- A reversal of winds due to migration of subtropical high-pressure systems
- A northerly migration of the Intertropical Convergence Zone (ITCZ)
- Flash floods can occur after extended dry periods
- Summer rains that occur due to low-pressure systems over the Himalayas
Thus, the correct answer would be E. All of the above. The monsoon season is characterized by a complex meteorological pattern, involving the reversal of winds, migration of the ITCZ, and climatic changes induced by geographical features such as the Himalayas, which lead to the heavy rainfall and other associated phenomena like flash floods.