Answer:
A) is motivated by self-interest.
Step-by-step explanation:
He decides to use the egoism approach to decision making and remain silent about the defect, because he is motivated by self-interest.
Self-interest refers to some actions that elicit personal benefit.
The egoist approach to ethics is based on the principles of self-interest, individual good, and satisfaction.
Therefore the correct answer is that sales manager, Dev is motivated by self-interest.