B is the correct option Nazir. I am shocked what respected C.V.Ramana sir has written..Poor visibility through a fog layer is due to scattering of light by fog droplets. I think every question asked to the so called experts should be completely evaluated through a number of ,again so called, experts and then a conceptually crystall clear solution as well as the final answer should be presented.Otherwise the existence of this site is meaningless..I am sorry to say this but this is the truth and truth is biiter.
Moderation Team
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