The answer for your question is b and c.
Hope this helps:)
A.
Dad is definitely XrY(colorblind),
mom can be either XRXr(heterozygous,carrier, not colorblind) or XrXr(colorblind)
B. 50%(for XRXr*XrY)
C. So the cross’ll be XrXr*XRY. All the boys will be colorblind(XrY). The girls will be carriers of the recessive allele(XRXr).
Hope this helps:)
I believe the correct answer is “C. carbon cycle”
Eyes and smile will be the first attraction I would say