Answer the following question given this paragraph: 

Individual nucleotides can be linked together through their phosphate groups to form nucleic acid polymers. Once constructed, DNA generally exists as two strands that are linked together by hydrogen bonds, producing a double-helical structure (see Figure below ).


Q: Individual nucleotides can be linked together through their phosphate groups to form?

 Choices:

- atoms

- nitrous acid polymers

- dna

- nucleic acid polymers

A:
nucleic acid polymers
