Where must all 125-volt, single-phase, 15- and 20-ampere receptacles in kitchens be GFCI protected?

All 125-volt, single-phase, 15- and 20-ampere receptacles in kitchens must be GFCI protected in areas that are likely to be exposed to moisture, which is prevalent near sinks and cooking appliances. Ground Fault Circuit Interrupter (GFCI) protection is essential in these locations because it helps prevent electrical shock hazards that can occur when water and electricity come into contact.

The requirement for GFCI protection near sinks is well established, as that is a common area where water is present. Additionally, providing GFCI protection near cooking appliances addresses the risk of unintended splashes or spills that could create a similar hazard.

Option D emphasizes this comprehensive approach by acknowledging both necessary locations for GFCI protection—in close proximity to sinks and cooking appliances—ensuring that all potential risks are mitigated effectively. This alignment with safety standards promotes a safer kitchen environment, which is why such widespread GFCI protection is mandated in kitchen settings.