Question

which best describes the relationship between DNA, genes, and chromosomes

Answer 1

genes<DNA <es
whch one DNA may contain several genes
and DNA +protein make one chromosome

Answer 2

Chromosomes are made up of DNA and proteins (the proteins are for structural stability and gives the chromosomes their characteristic form by "packaging" the DNA) and contains several genes and other regulatory elements.

Here's a drawing that illustrates it :

PS: Yeah, I'm horrible at drawing, but it illustrates the basic idea !