In the context of 1857, the term "revolt" refers primarily to uprising of the:

Civilians

The correct answer is Option (4) → Civilians

NCERt: In the context of the revolt of 1857 the term revolt refers primarily to the uprising of the civilian population (peasants, zamindars, rajas, jagirdars) while the mutiny was of the sepoys.

Revolt – a rebellion of people against established authority and power. The terms ‘revolt’ and ‘rebellion’ can be used synonymously.

Mutiny – a collective disobedience of rules and regulations within the armed forces.