Governmentto rule by right of authority, as a king or queen or elected administrator does: [~ + object]to govern a nation. [no object]I'm sure he governs fairly. to exercise a directing or restraining influence over; control:[~ + object]the motives that govern a decision.
Once you have the quote inside the marks you are going to put parenthesis then put (pg. 38).
From the answers given.
I would go with D, as Non-fiction isn't locked to politics or science; It's moreover use to categorize literature (books, etc...) that are based solely on fact.