Answer:
a. per diem
Step-by-step explanation:
The salesman's job responsibility to increase the sales for the company through which the company could accomplish its future goals. In exchange for that, the salesman gets the remuneration the company hired for.
As when the salesman travels for his company, he has given the specific amount for food, travel, and hotel per diem. The per diem is a Latin word that means per day.
The daily allowance is given by the company to a salesman with the hope that the salesman perform his duties well so that he could be appraised in the next new months with respect to the promotion and other perks