Why is dna not used directly as a code for protein synthesis and instead, a messenger rna must be transcribed?

Ineed to know why d is the correct answer asap

Molecular models of two different substances are shown below. in the molecule on the left, the oxygen atom pulls on electrons more strongly than the hydrogen atoms. in the molecule on the right, the two oxygen atoms pull on the shared electrons with the same strength. water molecule, h, o oxygen molecule, oz when the two substances are put in the same container, they do not attract each other. why does this happen? a. they both contain oxygen. b. one is polar and one is nonpolar. c . they are both polar. d. they contain different elements.

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks