Which of the following statements correctly defines the human microbiome?

The human microbiome is the collection of all genes present in human DNA.

The human microbiome consists of all viruses that can infect humans.

The human microbiome is the community of microorganisms, including bacteria, fungi, viruses, and their genes, that live in and on the human body.

The human microbiome includes only the bacteria that live in the human gut.