What is the recommended installation height for light switches according to the NEC?

The recommended installation height for light switches, according to the National Electrical Code (NEC), is typically between 15 inches and 48 inches above the finished floor. This range ensures that switches are accessible for users while also adhering to safety and usability standards.

The lower limit of 15 inches accommodates users in different situations, such as children or individuals with disabilities, ensuring they can operate the switches comfortably. The upper limit of 48 inches allows for general accessibility for most adults.

This specification aligns with the NEC's goal of providing safe, functional, and accessible electrical installations in residential and commercial buildings. It is also consistent with accessibility standards, which advocate for designs that consider all users' needs.

For the other options, they do not meet the NEC's recommended range for accessibility or safety considerations. The specified range in option C strikes a balance between visibility, usability, and compliance with regulations, making it the correct choice.