This phylogenetic tree illustrates the evolutionary relationships of tetrapods and was constructed using both anatomical and DNA sequence data. Using evidence from this tree, which statement most accurately reflects the relationship of mammals to birds and amphibians?

Mammals are more closely related to birds because they share a more recent common ancestor.

Explanation:

A tree diagram that represents hypothesised phylogenetic relationship illustrating evolutionary relationships among various entities (most often taxonomic groups) that are known to share a common ancestor.

An ancestors is one from whom a person is descended, whether on the father's or mother's side, at any distance of time; a progenitor; a forefather.

B. Mammals are more closely related to birds because they share a more recent common ancestor

oxygen +1 most likely