Answer:
go
Explanation:
Go means travelling somewhere hence it is a verb.
The sentence using the correct capitalization is the third:
"The Red Cross is a liaison for the families of soldiers stationed in other countries, acting as a go-between for separated spouses, parents and children."
Neither <em>liaison</em> nor <em>soldiers</em> need to be capitalized, since they are only common nouns, while the <em>Red Cross</em> is the proper noun of an institution and as such, it needs to have each word capitalized.
Explanation:
Quotation marks are used to represent exact language that is used by another person, it can be something they said or a line from story or poem. Quotation marks are meant signal that the stated line had been said by someone before and therefore you avoid plagiarism.
<span> Not sure on this one, probably </span>characterization
