A palm reflects what percentage of the light striking it?

The palm of a hand reflects approximately 36% of the light that strikes it, making this the correct answer. This percentage is indicative of the reflectivity of human skin, which varies based on several factors such as skin tone, texture, and moisture levels. In photography and lighting situations, understanding the reflectivity of different surfaces is essential for accurate exposure and achieving the desired effects in a photograph.

The other percentages listed do not accurately represent the typical reflectivity of the palm. Lower percentages like 18% or 24% would suggest a much darker or more absorbing surface than the palm, while a reflection of 50% implies a highly reflective surface that doesn't correlate with human skin. Recognizing this specific reflectivity aids photographers in managing and manipulating lighting conditions effectively in their work.