Pretty sure you need to click the pic to see it QUICK PLEASE HELP
WILL MARK BRAINLIEST

How does DNA fulfill its role in inheritance,
genetic variation, and the control of cell functions?

B

Explanation:

DNA helps code for our proteins. The way DNA is passed is from parent to offspring. DNA Nitrogenous bases for each person is going to be different.

Hope this helped :)

"d.) carbon dioxide and hydrogen sulfide"

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).