Explanation: To understand the correct answer, we need to analyze each statement individually:
1. **India is the driest inhabited place on Earth.**
- This statement is false. The driest inhabited place on Earth is not in India. The driest inhabited place is generally considered to be the Atacama Desert in Chile, which receives less than 0.04 inches of rain per year. In India, the driest place is the Thar Desert, but it is not the driest inhabited place globally.
2. **Raziya Sultan was the Sultan of Delhi for almost 10 years.**
- This statement is also false. Raziya Sultan, who ruled from 1236 to 1240, was the Sultan of Delhi for only about 4 years. She was the first and only female Muslim ruler of the Delhi Sultanate. Her rule was relatively short and ended due to a rebellion against her.
3. **India is the largest democracy in the world.**
- This statement is true. India is the world's largest democracy, with a population of over 1.3 billion people. It has a federal parliamentary democratic republic system of government, with a President as the head of state and a Prime Minister as the head of government. The country holds regular elections and has a diverse electorate.
The correct answer is (C) Only 3, because the third statement is the only true statement among the three. The first and second statements are false due to incorrect geographical and historical information. Understanding these facts is crucial for anyone studying Indian geography, history, and political systems, as they form the basis of many questions in competitive examinations and general knowledge tests.