The XRF surface-wipe frequency should be every 6 months. Which option shows the correct frequency if the choices are rearranged so that 'every 6 months' is the last item?

The XRF surface-wipe frequency should be every 6 months. Which option shows the correct frequency if the choices are rearranged so that 'every 6 months' is the last item?

• A. Every 3 months
• B. Every 9 months
• C. Every 12 months
• D. Every 6 months

Answer: (D)

The key idea is to pick the interval that exactly matches the required schedule. Since the requirement is every six months, the correct option is the one that states six months. With the choices rearranged so that the six-month option is last, the final option is the correct pick. This interval keeps surface checks timely enough to catch changes without being unnecessarily frequent; shorter intervals (every three months) add workload without changing the requirement, while longer intervals (nine or twelve months) could miss issues between checks. So selecting the last option accurately reflects the six-month frequency.

The key idea is to pick the interval that exactly matches the required schedule. Since the requirement is every six months, the correct option is the one that states six months. With the choices rearranged so that the six-month option is last, the final option is the correct pick. This interval keeps surface checks timely enough to catch changes without being unnecessarily frequent; shorter intervals (every three months) add workload without changing the requirement, while longer intervals (nine or twelve months) could miss issues between checks. So selecting the last option accurately reflects the six-month frequency.