The great Mosque of Isfahan was built with a large sahn (courtyard) in its center in order to house an open air food market for the town's population throughout the working week

A provide space for pilgrims to perform the devotional practice of circumambulation

B accommodate the entire male population of the town during Friday prayers

C provide the Mosque's clergy with a private space for prayer and contemplation

The correct answer is

C provide the Mosque's clergy with a private space for prayer and contemplation

Explanation:

The great Mosque of Isfahan is an ancient Mosque found in Iran. It dates as far back as the 11th century, when the Seljuk Turks established the City Isfahan as their capital.

Over the years the mosque has been restructured, as some additions were made to it during the rule of Il-Khanid, Timurid, Safavid, and Qatar. Under the rule of Malik Shah I (who ruled between 1072-1092) and his immediate successors, the mosque attained its current four-iwan design.

Linking the four iwans of the mosque, at the center is a big courtyard open to the air, which provides a cool/quiet space from the noise and hustle of the city.