Go to reddit, r/askteengirls or r/teenagers
You'll get better answers there
What alleles do the parents have? If the parents are both Homozygous recessive the answer is 0%. If one is homozygous dominant it doesn't matter what the other one is, the answer is 100%. if the are both heterozygous the answer is 75%
All of the above are correct.
D is the answer to the problem
I would go with the first option