The biodiversity of different taxa is often represented as a tree similar to the one shown in the diagram.

Question

According to this diagram, to which phylum is Chordata most similar?

a
Nematoda because they are on the same branch of the tree and may have similar bone structures
b
Arthropoda because they are at similar heights on the tree and may share a common ancestor
c
Echinodermata because they are close together on the same branch of the tree and may have common features
d
Mollusca because they are closest together on the tree and may share many similarities in their DNA

Answer 1

c
Echinodermata because they are close together on the same branch of the tree and may have common features