In recreation areas, how many foot-candles are required for adequate lighting?

The correct answer is 40 foot-candles, as this level of illumination is typically recommended to ensure safety and adequate visibility in recreation areas. Adequate lighting in such spaces is crucial not only for enhancing the overall experience of users but also for preventing accidents and ensuring that activities can be carried out comfortably and effectively, especially in the evening or low-light conditions.

The standard of 40 foot-candles is based on health and safety guidelines that take into account the various activities that take place in recreation areas, allowing for sufficient brightness for both active sports and passive enjoyment, such as walking or observing nature. This lighting level strikes a balance between providing enough light without creating glare or discomfort. In contrast, the other options, while they may be higher or lower, do not meet the recommended standard for safe and functional recreational environments.