Final answer:
Southeast Asia includes diverse islands like Java, Sumatra, Sulawesi, and Luzon, all notable for their population, cultural heritage, and economic activities. All the options are correct.
Step-by-step explanation:
The islands of Southeast Asia are diverse and significantly varied in terms of culture, economy, and population dynamics. Among these islands are Borneo and the Philippines, which are known for their rich biodiversity and cultural heritage.
Notable islands in Southeast Asia include Java, which is one of the most densely populated islands in the world and home to more than half of Indonesia's population; Sumatra, known for its diverse wildlife and vast rainforests; Sulawesi, with unique cultural groups and various endemic species; and Luzon, the largest island in the Philippines and a hub of economic activity, as well as a popular destination for business process outsourcing (BPO).