Which country in Southeast Asia has the world's largest Muslim population?

A. Cambodia B. Indonesia C. Malaysia D. Philippines

The correct answer is letter B.

Explanation: Southeast Asia makes part of Islamic World with the most of the Islamic population. With more than 240 million Muslims.

Islam is the official religion of Malaysia and Brunei. And it is officially a religion of Indonesia, Thailand, and the Philippines. With 42% of the Southeast Asia being Muslims. The countries with the most population are Brunei, Indonesia, Malaysia, Thailand and Philippines.