Which of the following is NOT a requirement for habitable rooms in a basement according to electrical standards?

The correct answer highlights that providing natural light is not a requirement for habitable rooms in a basement according to the NEC. While adequate lighting is important for safety and functionality, the NEC does not specifically mandate that habitable rooms must have natural light, particularly in basements where windows may not be feasible or practical due to existing structures or grading.

In many cases, artificial lighting can sufficiently meet the standards required for habitable spaces. Conversely, the remaining choices are indeed requirements for these types of rooms. For instance, installing receptacle outlets ensures that there are sufficient electrical outlets for devices and appliances, ensuring safety and convenience. The presence of smoke alarms is crucial for fire safety and detection, which is a significant concern in any dwelling, including basements. Additionally, offering heating options is important for maintaining a comfortable and safe environment, especially in spaces that may otherwise be subject to cooler temperatures than the upper levels of a home.