Which of the following statements about Red Fort are correct?
1. It was constructed during the reign of Shah Jahan.
2. It is located on the banks of the Yamuna River.
3. It served as the main residence of Mughal emperors.

Correct Answer: 1, 2 and 3

Let us analyze each statement about the Red Fort step-by-step to understand why all three statements are correct:

Statement 1: It was constructed during the reign of Shah Jahan.
This statement is correct. The fifth Mughal Emperor, Shah Jahan, commissioned the construction of the Red Fort (Lal Qila) in 1638, when he decided to shift his capital from Agra to Delhi. Construction began in 1639 and was completed in 1648 under the supervision of the architect Ustad Ahmad Lahori.

Statement 2: It is located on the banks of the Yamuna River.
This statement is correct. The Red Fort was built along the banks of the Yamuna River in Delhi, which provided water to the fort's moats and served as a natural barrier of defense for the royal complex.

Statement 3: It served as the main residence of Mughal emperors.
This statement is correct. For nearly 200 years, the Red Fort served as the main ceremonial and political center of the Mughal Empire and was the primary residence of the Mughal emperors until 1857.

Since statements 1, 2, and 3 are all factually correct, the option including 1, 2 and 3 is the right answer.