The main reason behind Mahatma Gandhi's decision to take up the Khilafat Issue was:

Correct option is A

The correct answer is (a) To bring more unity among Hindus and Muslims.
 Mahatma Gandhi took up the Khilafat issue to bring greater unity between Hindus and Muslims in the Indian independence movement.
 The Khilafat Movement was initiated by Indian Muslims to protest against the dismemberment of the Ottoman Empire after World War I, which they saw as an attack on the Caliphate, a significant Islamic institution.
 Gandhi saw this as an opportunity to unite the two major communities in India under a common cause, thereby strengthening the struggle against British rule.
Important Key Points:
 Gandhi aimed to unite Hindus and Muslims through the Khilafat issue.
 The Khilafat Movement protested the dismemberment of the Ottoman Empire.
 Seen as an attack on the Caliphate by Indian Muslims.
 Provided a common cause for unity against British rule.
 Strengthened the Indian independence movement.
 Highlighted Gandhi's strategy of inclusive nationalism.
Knowledge Booster:
 To bring more unity among Christians and Muslims: Incorrect as Gandhi's focus was on Hindu-Muslim unity.
 To bring more unity among Hindus and ChristiAns. Also incorrect, as the Khilafat issue was primarily about Hindu-Muslim unity.
 None of these: Incorrect, as the primary reason was indeed to bring unity between Hindus and Muslims.