Explanation:

- Sikandar Lodi, a ruler of the Delhi Sultanate, was known for his administrative skills and efforts to expand the kingdom.

- Option 2: 1504 CE is the correct year when Sikandar Lodi founded the city of Agra. Agra later became an important center during the Mughal Era.

- Option 1: 1506 CE is close, but not the correct year. This was within Sikandar Lodi's reign, but Agra was founded two years earlier.

- Option 3: 1499 CE is earlier than when Agra was actually established by Sikandar Lodi.

- Option 4: 1508 CE is later than the correct year and does not mark the founding of Agra.

Option 2: 1504 CE is the correct choice.