The correct answer is option 3, Shivaji. Guerilla warfare is a type of warfare that involves small, mobile, and loosely organized groups fighting against a larger, more traditional military force. It is characterized by hit-and-run tactics, surprise attacks, and the use of unconventional strategies. Shivaji, the founder of the Maratha Empire in India, is known for pioneering the use of guerilla warfare tactics against the Mughal Empire. He employed a unique combination of warfare techniques, including ambushes, night raids, and guerrilla attacks on supply lines, to resist and eventually weaken the superior Mughal forces. This allowed him to successfully establish and expand his empire.