Answer:
Step-by-step explanation:
B. 100% of Southeast Asia is made up of islands. The region consists of two main geographic regions, namely the Asian mainland and the islands that stretch southward and eastward from the mainland, forming an arc-like shape known as the Malay Archipelago. The islands include large landmasses such as Borneo, Sumatra, and Java, as well as thousands of smaller islands. Therefore, all of Southeast Asia is composed of islands.