Due to each color's unique wavelength, we can distinguish many distinct hues. There is a specified wavelength for each colour. The retinas' cells are triggered into action by various wavelengths. As they travel a great distance through the atmosphere, their wavelengths are dispersed. The relationship between wavelength and scattering will be investigated.
We can confirm that the sky is typically blue throughout the daytime based on our daily observations. Now, if we give the subject of why the sky is blue some thought, we may discover the solution in only a few words: "scattering of light." We know that the Sun emits white light if you did your research properly. It goes to the earth and enters the atmosphere there. The air molecules and other contaminants like the dust particles scatter the light as soon as it enters the atmosphere. We already know that white light is composed of a rainbow's worth of colours, or seven distinct hues. This was demonstrated by Newton via the prism experiment. The maximum wavelength of these hues is approximately 750 nanometers for red and 400 nanometers for blue. Blue light is therefore the most widely dispersed. The spectrum of other lights remains contiguous. We can observe that the sky is blue as a result. What would occur if there was no atmosphere to disperse the light, though? We can wrack our heads a little and alter the way we look at this query. Let's assume that there is no light to be dispersed rather than that there is no atmosphere to do so. Due to the fact that neither scenario results in dispersion, the outcome would remain unchanged. What shade of blue is the sky, then? We are fully aware that on the opposite side, where night reigns, no light reaches the earth's surface. Black is the hue of darkness. We already know the answer: the absence of an atmosphere would result in a dark sky.

Hence, the correct answer is option B.