which of these is part of the dna structure? a lidocaine b benzene c guanine d radon

Answer

Brief Explanations:

DNA is composed of nucleotides, which contain a sugar - phosphate backbone and nitrogenous bases. The four nitrogenous bases in DNA are adenine (A), thymine (T), cytosine (C), and guanine (G). Lidocaine is a local anesthetic, benzene is an organic compound not related to DNA structure, and radon is a radioactive gas. Guanine is one of the bases in DNA.

Answer:

C. guanine