Answer:
A.
<em>"left them unprotected."</em>
Explanation:
The most logical answer.
Al-Khwarizmi developed algebra.
Renaissance is a <span>period of artistic and literary achievements in Europe from the late fourteenth to the early seventeenth centuries inspired by new interest in the classics. The correct option among all the options that are given in the question is the second option or option "B". I hope the answer helps you.</span>