C. less thoroughly than mainstream news sources
Answer:
on, beneath, inside, around, under, by, at, with, throughout, over.
Explanation:
The rule of thumb for prepositional phrases, or what I've been taught, is what a squirrel can do to a tree. A squirrel can be on a tree, beneath the tree, inside a tree, around a tree, under a tree, by a tree, at a tree, with a tree, throughout a tree, or even over a tree.
D. Who will
This answer makes the most sense, and Who'll means who will. If you insert Who will into the sentence, this choice is the only one that makes sense
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