The first action Gus, the repair guy, needs to take before working on the equipment is to diagnose the problem. Diagnosis involves an initial assessment to understand what is wrong with the equipment. Only after a proper diagnosis can a repair plan be formulated.
The question asks what needs to be done first before Gus, the repair guy, can begin working on the equipment. The correct answer is A. Diagnosis. Before any repair can be made, it is essential to perform a diagnosis to determine the exact issue with the equipment. Only with a clear understanding of the problem can Gus ascertain what needs to be repaired or replaced. Skipping this crucial step could lead to incorrect repairs, unnecessary replacements, or the problem persisting.
While checking tools and obtaining permission are also important steps, they follow the initial assessment of the problem. In some cases, permission is intrinsically given when a repair person is called in. Thus, making a diagnostic assessment is typically the first action taken by a professional repair technician.