Your answer is A.
It shows a nucleotide because there is a phosphorous group, a nitrogenous base, and a pentose sugar. Nucleotides are monomers of all nucleic acids. an example of a nucleic acid is DNA. Thereafter the correct answer is A.
B is wrong because it only shows C, H, O, and N, while nucleic acids need a P. B shows a protein.
C is wrong because it only shows C, H, O.
D is also wrong because it only includes C, H, and O.
Answer/Explanation:
A.
The monomers of a strand of DNA are called nucleotides. It is made of 5 deoxyribose, which is a phosphate group and it also has a nitrogenous bases that is bound to sugar. There is something called Adenine, which makes 2 bonds with Thyamine where as Cytosine can create 3 bons with Guanine!
