Find the 105th meridian of longitude. Name all of the Southeast Asian nations this meridian passes through. (Hint: China is not in the Southeast Asia.)

Explanation:

1) The meridian 105° west of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, North America, the Pacific Ocean, the Southern Ocean, and Antarctica to the South Pole

2)

i don't know if other countries too

a is the answer i believe.