Which of the following accurately pairs the maintenance activity with its frequency?

• A. Recalibration — monthly
• B. Check power cords for fraying or wear — annual
• C. Recalibration — annual
• D. Check power cords for fraying or wear — monthly

Answer: (D)

Regular safety maintenance uses frequent visual checks of electrical components, especially power cords, because they’re a common failure point that can pose shock or fire risks. Inspecting cords for fraying or wear on a monthly basis catches deterioration early, before it leads to hazards or outages. Recalibration, which verifies device accuracy, is typically scheduled less often—often annually or per the manufacturer’s guidance—since it’s a more involved process and not required every month. Among the options, pairing checking power cords for fraying or wear with a monthly frequency aligns with standard preventive maintenance and safety practices, making it the best fit. The other pairings assign monthly or annual frequencies to recalibration or cord checks in a way that doesn’t match typical maintenance rhythms.