The coolest climates in Southeast Asia exist in
a Indonesia and Singapore.
b. the mountains of Myanmar, New Guinea, and Borneo
c. the coasts of Thailand and Vietnam.
d South Vietnam and southern Cambodia.

The coolest climates in Southeast Asia exist in the mountains of Myanmar, New Guinea, and Borneo.

There are three types of climate that prevails in the region of South Asia . They are dry, temperate and tropical. The climate ranges from tropical to sub tropical in the region of Northeast. There will be the existence of moisture as we move towards west. There exist a desert  like climate in the region of Middle east.

The region of Southeast Asia can be divided into Mainland and Maritime southeast Asia. the countries like New Guinea, Borneo and the mountains of Myanmar experience a coolest climates. This is because these are near to the islands that are present i n the southeast Asia.

B

Explanation:

answer called a epicycle;