<span>Knowledge of astronomy
was used by Muslims to fulfil religious obligations is the statement about the
Islamic Golden Age is a fact and not an opinion. So option “C” is the correct
option. A fact is actually something that has definitive proof while an opinion
can be based on assumption. During this period of Golden Age the Muslims had a
great knowledge about astronomy and this was a great achievement considering
the time. This Golden age actually is thought to have started from the mid-7th
century and lasted up to the mid-13th century. </span>
