The correct answer is option 3: non-cooperation. Satyagraha is a concept developed by Mahatma Gandhi during the Indian independence movement. It is a nonviolent resistance strategy that relies on non-cooperation with unjust laws or systems.

Option 1, sudden outbursts of violence, is not consistent with the principles of satyagraha, which promote nonviolence. Option 2, armed conflicts, also contradicts the philosophy of satyagraha, as it emphasizes peaceful means of resistance. Option 4, communal riots, is unrelated to satyagraha, as it refers to conflicts between different religious or ethnic groups.

Satyagraha aims to achieve change through peaceful methods, such as protests, strikes, and civil disobedience. It encourages individuals to actively resist unjust practices and systems while maintaining respect and compassion for opponents. Ultimately, the goal of satyagraha is to create a just and harmonious society.