Final answer:
Southeast Asia has an approximate population of 600 million option (e), with significant portions living in Indonesia and the Philippines, and noticeable populations in Vietnam and Thailand as well.
Step-by-step explanation:
The approximate population of Southeast Asia is 600 million people. The region is incredibly diverse, with more than half of its population residing in the islands of Indonesia and the Philippines.
Indonesia alone has a population of more than 260 million, with over half living on the densely populated island of Java. Similarly, the Philippines has a substantial population of over 104 million. Other countries in Southeast Asia such as Vietnam and Thailand also have high population numbers, contributing to the region's overall population density and growth.