Who among the following Mughal Emperors took part in the Revolt of 1857?

Bahadur Shah II

The correct answer is Option (3) → Bahadur Shah II

11-12 May 1857: Bahadur Shah II accepts nominal leadership of the revolt.

During the Revolt of 1857, Bahadur Shah II, also known as Bahadur Shah Zafar, played a symbolic role as the nominal leader of the rebellion. Bahadur Shah Zafar was the last Mughal emperor, and by the time of the uprising, the Mughal Empire had already lost its political power to the British East India Company.