Answer:
A. Travelling to Mecca
Step-by-step explanation:
Mecca is the place which is holy to all the Muslims. Non Muslims are not allowed to enter. Pilgrimage to Hajj is considered to be the fifth and final pillar of the Islam. The pilgrimage occurs in the twelfth month of Islamic calendar, it is mandatory for the Muslims to do pilgrimage to the hajj once in their lives if their body and finances are fit to undertake this journey. The ritual promotes the bonds of Islamic brotherhood as it shows that every one is equal in the eyes of Allah