I think that its "A biography written by a historian" though A and B are the same answers
Answer: D) It is severe.
Explanation: Austerity, strict/harsh state of. one can deduce that it is not fearless or informal with minimal effort. Strict can become complex, but does not carry the meaning of complex, so we can eliminate that as well, which leaves us with severe as our answer.
Correct sentence would be: I just found out that he was cheating on the test.
Hope this helps :)
I think it's lumine to luminescent but I might be wrong
Apparently it's from the 15th Century's Old French emploier, Latin implicāre to entangle, to engage, from plicāre to fold
