Answer:
The answer is option D) Ask another employee who is a close friend to that employee to talk with him/her about the issue and to report back to you.
Step-by-step explanation:
If you have absolute trust in the integrity of the supplying company and your suspicions is directed to a particular employee of yours when you noticed a missing computer from a large shipment of new computers that just arrived, you need to find enough evidence before you confront him.
The best action plan would be to fish for evidence to prove he is indeed guilty of your suspicion by asking another employee who is a close friend to that employee to talk with him/her about the issue and to report back to you.
Secondly, It is better not to confront him directly with your suspicious because your action could be influenced emotionally causing an outburst that may not end well
When you get the feedback from the employee close to this suspected employee, your next course of action will be more congruent.