During the Revolt of 1857, the sepoys began their action using which of the following signals:

A. Firing of the morning gun.
B. Firing of the evening gun.
C. Sounding of the bugle.
D. Playing of drums.
E. Playing of trumpets.

Choose the correct answer from the options given below:

B, C only

The correct answer is Option (2) → B, C only

Firing of the Evening Gun (Option B): The firing of the evening gun was a traditional military signal used to mark the end of the day's activities. In the context of the Revolt of 1857, it served as a signal to commence the sepoys' actions and rebellion against the British East India Company.

Sounding of the Bugle (Option C): Bugle calls were integral to military communication and coordination. The bugle was used to convey different signals and orders in a military setting. During the revolt, the sounding of the bugle was likely used as a call to action, signaling the start of the sepoys' uprising.

So, the correct option is [2].