The Islamic thinker who studied Aristotle and whose thought, in turn, influenced the rise of European scholasticism was:

The Islamic thinker who studied Aristotle and whose thought, in turn, influenced the rise of European scholasticism was: Ibn Rushd.

Explanation:

Abū l-Walīd Muḥammad Ibn (Aḥmad Ibn Rušd) was a Muslimman, polymath and jurist who wrote about many subjects, including philosophy, theology, medicine, astronomy, physics, psychology, mathematics, Islamic jurisprudence and law, and linguistics. His style of writing features mainly on his commentary of Aristotles' works which gained him prominence

d.he wanted to send diplomats to communist countries.

d is the right answer