Which of the following countries is NOT a landlocked microstate?

What is the second-smallest country in the world by area? What is the smallest country in the European Union by area? 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 country in the Persian Gulf is the smallest country in the Middle East? Which country is an archipelago of 115 islands in the Indian Ocean? What is the smallest country in Central America? Which country in the Caribbean is the smallest English-speaking country in the Americas?