A staircase with six or more risers requires a light switch at ___________________________________________ of the staircase.

• A. the bottom
• B. the top
• C. both the top and the bottom
• D. neither the top nor the bottom

Answer: (C)

A staircase with six or more risers requires a light switch at both the top and the bottom of the staircase to ensure safety and convenience. The presence of switches at both locations allows users to easily turn the lights on before ascending or descending the stairs, which is particularly important in preventing accidents due to insufficient lighting. Having a switch at both ends minimizes the risk of falls and enhances the overall accessibility of the staircase, as individuals can control the lighting from either position without needing to navigate in the dark. This requirement aligns with building codes and safety standards aimed at protecting inhabitants and visitors in residential environments.