If a color blind woman marries a normal visioned man, their sons will be:

Explanation

Color blindness is a recessive, sex-linked trait carried on the X chromosome. When a color blind woman (XXc) marries a normal-visioned man (XY), each son receives the Xc chromosome from the mother and the Y chromosome from the father. This results in all sons being color blind, as they lack a normal X chromosome to mask the recessive trait. Daughters, however, will be carriers, inheriting one normal X from their father and one Xc from their mother. The incorrect options suggest other outcomes, but based on sex-linked inheritance, all sons will inherit the Xc chromosome from their mother and be color blind.