Answer: Career
Explanation: A job is only for a certain time. A salary is the money you make during your time at a job. A workforce is an area of work multiple people work in. This leaves the only remaining answer as Career.
In the Book Death of a salesman we can infer that the person they are taking about has qualities that are beneficial for communicating and having positive relations with others. They also have some negative qualities that turn people away because they are unpleasant and not sought for.
C is the answer because it represents a mood the most