The country with the tallest mountain peak is indonesia east timor vietnam myanmar

From this country's list, the country with the tallest mountain peak is Myanmar.

Explanation:

To understand this answer we need to review all of the options having something clear. We need to choose the country with the tallest mountain peak from this group. Not all of the countries in the world.

First, Indonesia's tallest peak mountain is the "Puncak Jaya" that is 4,884 meters tall.

Second, East Timor's tallest peak mountain is the "Tata Mailau" with a size of 2,986.

Third, Vietnam's tallest peak mountain is the "Fansipan" with 3,143 meters of hight.

Fourth, Myanmar's highest peak mountain is the "Hkakabo Razi with 5,870 meters of altitude.

Now, after watching all this data we can know that the tallest peak belongs to Myanmar and that is the reason that makes it the correct answer.