The Battle of Tarain was fought in the year 1191. It is an important battle in Indian history and was fought between the forces of Prithviraj Chauhan, the king of the Chauhan dynasty, and Muhammad Ghori, the ruler of the Afghan Ghurid dynasty.

Option 1: 1526 is incorrect as the Battle of Tarain took place much earlier, during the 12th century.

Option 2: 1757 is also incorrect as it refers to the Battle of Plassey, which was a significant battle in the establishment of British colonial rule in India.

Option 4: 1857 is incorrect as it refers to the Indian Rebellion of 1857, also known as the Sepoy Mutiny, which was a major uprising against British rule in India.

Therefore, the correct answer is option 3, 1191.