A Professor Signed a Contract with a Publisher to Write

A professor signed a contract with a publisher to write a textbook for them by Christmas,after which he will be paid $15,000.What is this an example of?

A) the reasoning of the ethic of community
B) the relationships in Gesellschaft groups
C) the reasoning of conventional morality
D) the relationships in Gemeinschaft groups
E) the reasoning of the ethic of divinity