What is true about the visibility in limited visibility conditions?

Visibility in limited visibility conditions can vary based on environmental factors, making the selection of this answer accurate. Factors such as water density, suspended particles, temperature gradients, and light can all influence how far a diver can see underwater. For instance, during a rainstorm, visibility can decrease due to runoff altering water clarity, while a thermocline may create layers that restrict sight as well.

The notion that visibility is constant at all depths does not hold true, as different depths can present varying clarity and light conditions due to the absorption and scattering of light. Additionally, the idea that poor visibility only occurs at night is misleading since there can be numerous daytime conditions, such as murky water or particulates, that also impair visibility. Lastly, while artificial light can enhance visibility in certain situations, it does not inherently improve the water clarity itself. Light can illuminate an area but may not penetrate significantly farther through murky or saturated underwater conditions.