They are made of protein and one molecule of deoxyribonucleic acid (DNA). As the genetic material passes from parents to child, the chromosomes are responsible for containing the instructions that make the offspring unique while still carrying traits from the parent.
Honestly it would be the Exosphere<span> but since that's not one of the choices it would be the Thermosphere. </span>
Demonstrative pronoun is the answer.
The answer is D. All the above
