Explanation:

- Babur, the founder of the Mughal Empire in India, fought against Rana Sanga of Mewar in the Battle of Khanwa.

- The battle took place after Babur's victory at the First Battle of Panipat in 1526.

- This battle was crucial for establishing Mughal dominance in the Indian subcontinent.

- Option 1: 1531 – Babur did not engage in the Battle of Khanwa in this year. This year was significant for his consolidation efforts post major battles.

- Option 2: 1527 – This is the correct year for the Battle of Khanwa. Babur defeated Rana Sanga here, solidifying his rule.

- Option 3: 1529 – This year marks Babur's involvement in the Battle of Ghaghra.

- Option 4: 1525 – This year was before Babur's conquest of India began in earnest.

? Option 2 - 1527 is correct.