How should light fixtures be installed in a shower area?

Fixtures in a shower area must be rated for wet locations because they are directly exposed to moisture and water. This requirement ensures that the electrical components of the light fixtures can withstand high humidity and potential water exposure without posing a risk of electric shock or short-circuiting. Wet location-rated fixtures are designed and tested to operate safely in environments where they might come into contact with water, making them essential for safety in areas such as showers. Using the appropriate fixtures reduces the risk of electrical hazards and ensures compliance with electrical codes and standards that protect users.

The other options do not meet the necessary safety standards for wet locations. Standard fixtures may not provide the needed protection against moisture, and limiting the types of fixtures to only incandescent does not address the essential aspect of moisture resistance needed in a shower context. Requiring that fixtures be out of reach does not ensure they are safe from moisture exposure either, as water can still contact them if they are located within the shower area.