Question

multiple - choice question
bilal ibn rabahs call to prayer established medina as the
town where all of the five pillars of islam were established.
place where muslim slaves were freed.
site of the first mosque.
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Explanation:

Bilal ibn Rabah was the first muezzin in Islam. His call to prayer in Medina did not establish it as the town where all Five Pillars of Islam were established. Also, it was not the event that freed Muslim slaves. However, Medina is home to one of the first and most important mosques - the Prophet's Mosque. His call to - prayer was an important part of the religious life centered around this early mosque.

Answer:

site of the first Mosque.