Question

dna stands for
deoxyribonucleic acid
ribonucleic acid
diribonucleic acid
none of these.

Explanation:

DNA is an abbreviation. The full name is deoxyribonucleic acid. Ribonucleic acid is RNA. Diribonucleic acid is not a correct term related to DNA.

Answer:

deoxyribonucleic acid