This is a bit tricky, but in general, it is climate change that is the source of the greatest disagreement among American politicians, because some people still think it doesn't exist.
Answer:
Zhu Yunwen was the one that took over
They only read the Qur'an and other works that had been written by Muslims and this best describes the studies of Muslim philosophers during the Middle Ages. The correct option among all the options that are given in the question is option "a". The Muslims of the Middle Ages progressed due to their progressive thinking.