In their evaluation of his performance as a trainer in the sales department of Pharmex, Heath's supervisors look at such factors as the as the amount of time he spends with each of his trainees, his coverage of all key points, his success rate in turning out trained salespeople within the amount of time allotted, and so forth. In other words, Heath's supervisors are evaluating his:_____.
a. responsibility.
b. job performance.
c. boosterism.
d. job commitment.