Final answer:
The amount of effort that a person exerts to achieve a level of job performance is work motivation (C).
Step-by-step explanation:
The amount of effort that a person exerts to achieve a level of job performance is work motivation (C).
Work motivation refers to the internal drive or desire that a person has to put in effort towards achieving job-related goals. It is the level of enthusiasm, energy, and persistence that an individual brings to their work.
For example, if a person is highly motivated, they may put in extra hours, go above and beyond their job responsibilities, and consistently strive for excellence. On the other hand, if someone has low work motivation, they may lack enthusiasm, struggle to meet deadlines and show limited initiative.