A colour blind mother and normal father would have offsprings:

Explanation

The correct option is: a) Colour blind sons and normal/carrier daughters. The reason for this is that color blindness is a sex-linked genetic disorder, primarily affecting males. The genes responsible for color vision are located on the X chromosome. Females have two X chromosomes (XX), while males have one X and one Y chromosome (XY). In this scenario, the mother is color blind, which means she has the color blindness gene on one of her X chromosomes. The father, being normal, does not carry the color blindness gene. If the mother passes on her X chromosome with the color blindness gene to a son, he will be color blind because the Y chromosome from the father does not have a corresponding gene to compensate for the color blindness gene on the X chromosome. Daughters, on the other hand, inherit one X chromosome from the mother and one X chromosome from the father. If the daughter receives the X chromosome with the color blindness gene from the mother, she will be a carrier of color blindness but will not typically show symptoms. However, if she receives the normal X chromosome from the father, she will not be color blind. Therefore, the most likely outcome is that the couple will have color blind sons (inheriting the color blindness gene from the mother) and normal or carrier daughters (depending on which X chromosome they receive).