The Revolt of 1857, also known as the Indian Rebellion of 1857 or the First War of Independence, was a major uprising against British rule in India. It began in Meerut on May 10, 1857, and spread across various towns and cities in the country.

Option 1: Ayodhya - Ayodhya was indeed one of the centres of the Revolt of 1857. The local people, including soldiers and civilians, actively participated in the rebellion against the British.

Option 2: Agra - According to the question, this town was NOT a centre of the Revolt of 1857. Although Agra played a significant role during the rebellion, especially with the participation of the Indian soldiers stationed at the Agra Fort, it is important to note that it was not one of the major epicenters of the revolt.

Option 3: Delhi - Delhi was one of the key centres of the Revolt of 1857. It was the center of power in India at the time, and the rebels, including the soldiers of the Bengal Army, played a crucial role in capturing and briefly holding the city from the British.

Option 4: Kanpur - Kanpur (formerly known as Cawnpore