Which southwest asia country has a higher mountain elevation along with many protected reserves and 21 national parks?

The highest mountain in Southeast Asia is Hkakabo Razi (5881 m) in Myanmar, but on average the highest country in this region is Vietnam with a mountain range stretching through all of the country. In here there's lots of national parks, protected areas and reserves, which serve to protect the beautiful nature and wildlife. Some of the best know national parks are Phong Nha-Ke Bang national park and Cham Island.

Ibelieve that a would be the best answer.