Final answer:
Calvin exhibits his technical skills by troubleshooting a production machine issue. This reflects his ability to apply specialized knowledge and abilities relevant to technology and machinery.
Step-by-step explanation:
When Calvin helps an employee troubleshoot a problem with a production machine, he is using his technical skills. The question is determining which kind of skill is being applied in a practical and problem-solving scenario within the workplace. Technical skills refer to the specific knowledge and abilities required to perform tasks related to technology, machines, or in areas of technical expertise. In contrast, negotiator skills would be used in situations requiring bargaining, interpersonal skills in social interactions and communications, and conceptual skills in understanding complex ideas and implementing strategies.