in 17 th days baby can see Or not and can listen Or not?

A. At Message a child cannot see it for them everything is black and white or black basically they do not have vision as such they can listen a little bit but not as such as they will start doing after the age of three must because that is the right age for a child to gain its vision as well as the start responding to sounds like Vishal sometimes name clapping and also they do learn to give a social smile