What was the main aim of Gandhi's strategy of linking the Khilafat Movement with the Indian national movement?

Correct answer: To build a wider mass movement based on Hindu-Muslim unity

The governing idea was to broaden anti-colonial nationalism through Hindu-Muslim unity. The Khilafat issue had mobilised many Muslims, while the national movement opposed colonial rule more generally. Gandhi linked the two causes so that different communities could participate together in a mass non-cooperation struggle. Thus option A is correct. Options B, C, and D contradict the purpose of mobilisation and boycott; the strategy was not intended to exclude peasants, support wartime recruitment, or promote foreign goods.