The phylogenetic tree shown shows the evolutionary relationships among finches.
What can be concluded from this diagram?
a
Warbler finches and cactus finches are the most closely related.
b
No finches have a common ancestor.
c
Tree finches and warbler finches are the least closely related.
d
Tree finches and cactus finches have a common ancestor.
d
Tree finches and cactus finches have a common ancestor.