Thomas Paine questioned British authority for many reasons. Some of the main ones were that Britain is too far away and because of that should leave America alone; another was that they always wage wars in which America suffers; another was that the American people ran away from the crown just to be greeted by a country where the same crown rules. The list of reasons goes on and on and on.
Widow and Lonely!
As you can tell from the short context, she is trying to convince Vivien to console with her because she is lonely.
The answer is c. A pronoun takes place of a noun and so they is also plural.
The committee (It) discussed its personal goals...........
Committee is a collective noun and therefore singular