Which statement is true about maintenance intervals?

• A. Monthly requires recalibration
• B. Annual requires check of cables
• C. Monthly requires check of power cords for fraying or wear
• D. Annual requires cleaning the exterior

Answer: (C)

Regular safety-focused maintenance uses frequent quick checks for items most likely to fail or cause hazards. Power cords are a common weak point because insulation can crack from bending, tucking, and everyday handling. A monthly check for fraying or wear catches damage early, reducing the risk of electric shock or fire and keeping the device safe to use.

Recalibration is a more involved service that typically isn’t done every month; it requires proper testing equipment and may be scheduled by manufacturers or technicians based on usage or time since last service. Checking cables annually would miss wear that can accumulate in a short period, increasing risk. Cleaning the exterior is part of routine hygiene and might be done on a different schedule, not specifically tied to a yearly maintenance interval. So the monthly focus on power cords for fraying or wear best aligns with practical safety maintenance practices.