by breaking down proteins within the cell by directing the process of protein synthesis by regulating the storage of cellular proteins by controlling the movement of protein molecules
I gave my students this multiple choice question: DNA molecules contain the genetic information that determines the characteristics of a living organism. How do DNA molecules express the genetic information they contain?

Only one answer is correct among these 4 choices:
- by breaking down proteins within the cell
- by directing the process of protein synthesis
- by regulating the storage of cellular proteins
- by controlling the movement of protein molecules

Could you tell me which one is correct?

by directing the process of protein synthesis