Question

the fact that the astrolabe was developed in the muslim empire implies that
europeans had more advanced technology.
europeans did not make use of new knowledge.
the muslim empire was technologically advanced.
the world outside of europe was undeveloped.

Explanation:

The astrolabe was a sophisticated astronomical/navigational tool. Its development in the Muslim empire directly points to that civilization having advanced technological capabilities at the time. The other options are incorrect: there is no evidence here Europeans had more advanced tech, that they rejected new knowledge, or that non-European regions were undeveloped.

Answer:

C. the Muslim empire was technologically advanced.