In order to survive, all organisms must carry out
a. autotrophic nutrition
b. heterotrophic nutrition
c. enzyme-controlled reaction
d. the process of reproduction

Enzyme-controlled reactions (digestion, synthesis, growth, regulation, reproduction, circulation, excretion)

Explanation:

the father in the first generation probably had the recessive colorblind trait in his x chromosome. if he and his wife both had the colorblind trait, even if she had 1 recessive and 1 dominant, then that trait would be passed on to their kids.

(since you didn't attach the family tree this is just an assumption)