Which country is an archipelago of 115 islands in the Indian Ocean?

Which of the following countries is NOT one of the five smallest countries in the world by land area? Which microstate is often described as the world's oldest surviving republic? Which of the following countries is NOT a landlocked microstate? Which country in the Persian Gulf is the smallest country in the Middle East? What is the smallest country in Central America? Which country in the Caribbean is the smallest English-speaking country in the Americas? Which European country has a population of around 34,000 and covers an area of approximately 61 km²? What is the most populous country in the world?