Which environmental factor does NOT affect daytime visual illusions?

Daytime visual illusions are primarily influenced by factors that relate to the way light interacts with our environment and how we perceive it. Weather conditions, such as fog, rain, or haze, can distort visibility and affect the clarity and contrast of objects, which can lead to illusions. Lighting also plays a crucial role since the intensity and angle of light can change how we perceive colors and shapes, further contributing to visual misinterpretations. Sun angles are particularly impactful because the position of the sun can create glare or shadows that distort visual perception.

Temperature does not significantly impact daytime visual illusions in the same way. While temperature can affect physical conditions and visibility to an extent, it does not directly alter the visual perception based on how light interacts with objects or the environment. Therefore, temperature is not a major factor in contributing to visual illusions compared to weather, lighting, and sun angles, making it the correct choice in this context.