The longer answer is about how the myth came about. In WW2 theBritish were using radar to find enemy airplanes, but to keep radar a secret they told the whole of Britain they were feeding their men...
No it is not proven that carrots do actually help you to see in the dark. . . this is an old myth not a true fact
No. It's a old wives tale. :)
No, but it is good for health and it improves vision.