Final answer:
The practice most closely associated with a person of the Islamic faith is the hajj, or the pilgrimage to Mecca.
Step-by-step explanation:
The practice most closely associated with a person of the Islamic faith is the hajj, or the pilgrimage to Mecca, which is one of the Five Pillars of Islam. The hajj is a journey to the religion's most sacred place, the Kaaba, and is considered a fundamental principle of the faith. Muslims aspire to undertake the hajj at least once in their life if they are able.