Final answer:
The ideal amount of light for a reading room is an adjustable variety of light sources.
Step-by-step explanation:
The ideal amount of light for a reading room would be an adjustable variety of light sources. This allows the reader to customize the lighting to their preferences and the type of reading material. For example, if the reader is viewing images or diagrams, they may prefer brighter lighting, while for continuous reading, a slightly dimmer light may be preferred to reduce eye strain.