Which campaign did Mahatma Gandhi initiate in the year 1942?

Explanation

Mahatma Gandhi started the Quit India Campaign in August 1942 amid World War II, demanding the British to leave India. This movement involved mass protests, strikes, and acts of civil disobedience. The British authorities responded harshly by arresting Gandhi and other leaders. Although it was suppressed, the campaign significantly advanced India's independence struggle, culminating in freedom in 1947. The Civil Disobedience Campaign took place in the early 1930s, and the Non-Cooperation Campaign was launched in the early 1920s. Therefore, the correct answer is option B, Quit India Campaign.