If your question is: Which sentence contains a word that should be capitalized, the correct answer is (12) It was started in 2009 by actor Matt Damon and Gary White, the co-founder of Water partners. The word that should be capitalized is partners: Water Partners. The noun "partner" is normally a common noun, which means it shouldn't be capitalized in normal circumstances. However, here it represents the name of a company which is called Water Partners. It is just like with Warner Brothers (even though it's abbreviated as Warner Bros) - brothers is normally a common noun, but in this case, it is part of the company's name.
I'd say I guess C. asking the advice of a reference librarian
I would say the correct one would be C. To keep track of both online and printed papers.
