The answer should be A. This is because the other sentences don't need any word except for the first word in its sentence.
In the answer choice A, partners in Water partners should be capitalized because it is an organization. Therefore the sentence should be...
"<span>It was started in 2009 by actor Matt Damon and Gary White, the co-founder of Water Partners."</span>
The correct answer is sentence (5).
A sentence fragment means that it is only a part of a sentence; it is not complete. Given that it is incomplete, the fragment, aka subordinate/dependent sentence, has to be part of a larger, independent sentence, in order to make any sense. So if you combined sentence (5) with another one, it wouldn't be a fragment anymore.
This means anthropology is not science.
It basically means effecting the whole thing. when you throw a stone in the water it effects the whole pool of water.
The answer would be B. He is named Friday because they met on a Friday.