I believe the answer is: C.casuistry
casuistry refers to a form of reasoning that sound clever when being said but is based on non-logical reasoning. Usually, Casuistry commonly can be heard when people with excellent communication skills is speaking about the topic related to morality.
The correct answer should be B. Party leader
The representative of the nation is of the people and the country, same with chief executive, while the commander in chief role is for the army. The party leader is for his/her own party.
Arriving at work on time everyday is a Work habit