Which among the following countries has the largest population?

1. The question asks which country among the options has the largest population, relevant to data around 2003. 2. The options are Indonesia, Japan, Pakistan, and Sudan. 3. Approximate populations around 2003: - Indonesia: ~220 million (4th most populous in the world) - Japan: ~127 million - Pakistan: ~150 million - Sudan: ~34 million (before the split of South Sudan) 4. Comparing these figures, Indonesia had the largest population among the given options. 5. Therefore, the correct answer is (A).