Correct Answer:
B. Masjid al-Haram
The biggest mosque in the world is Masjid al-Haram. Located in Mecca, Saudi Arabia, it is the most sacred site in Islam, encompassing the Kaaba, which Muslims face during their daily prayers. It is the primary destination for the annual Hajj pilgrimage and the lesser Umrah pilgrimage, accommodating millions of worshippers. Its vast expansion over centuries has made it the largest in terms of capacity and area.
- Masjid an-Nabawi (The Prophet's Mosque) in Medina is the second largest.
- Faisal Mosque in Islamabad, Pakistan, is one of the largest mosques but not the biggest globally.
- Al-Aqsa Mosque in Jerusalem is historically and religiously significant but much smaller than Masjid al-Haram.