Final answer:
To prevent a soft filter from affecting a specific visual on a dashboard, isolate the visual from the filters. A blue filter transmits blue light and absorbs other colors, which is why blue light can pass through it.
Step-by-step explanation:
To ensure that soft filters do not affect a particular visual on your dashboard, the correct answer is to isolate the specific visual from the filters. This can usually be done within the visualization software or dashboard settings, allowing you to apply filter context to only the visuals you want affected. By isolating the visual, it will not respond to changes in the soft filters, and will continue to display data as if no filters are applied. This method is preferable to using hard filters or removing all filters entirely, as those actions would affect the entire dashboard or limit your ability to analyze the data dynamically.
Regarding the light filter question, the explanation is that only light from a blue bulb passes through the blue filter because a blue filter absorbs all visible light other than blue light. The blue filter does not absorb blue light; it transmits it, which is why we are able to see blue light coming through the filter.