Whom
Relative pronouns are used to refer to the nouns mentioned previously. "Whom" mentions Mae Davis and what she did.
Creating actions you know aren't right come with an unknown consequence.
In my opinion, the correct answer is D. <span>Combine sentences to lengthen them. Most of these sentences are short and have a simple structure. Some of them could be put together, for example: Succeeding him as king was his 15-year old son, Edward III; however, he was king in name only, whereas the real rulers were the queen and her sweetheart Roger Mortimer, both of whom were instrumental in the ousting of Edward II.</span>