Explanation:

- Paro is a well-known tourist destination located in Bhutan.

- Option 1: Sri Lanka – While Sri Lanka has famous towns like Kandy and Galle, Paro isn’t among them.

- Option 2: Bangladesh – Paro is not located in Bangladesh.

- Option 3: Bhutan – Paro is in Bhutan; it’s known for its scenic valley, the iconic Paro Taktsang (Tiger’s Nest Monastery), and the only international airport in Bhutan.

- Option 4: India – India has many famous towns, but Paro isn’t one of them.