Answer:
B. all species share a common ancestor and that change occurs through time.
Step-by-step explanation:
The branched tree diagram is widely used in biological studies to explain evolutionary and inheritance processes. When the tree diagram is applied to a group of living beings, it means that all living beings represented there have the same ancestor in common, which is represented at the base of the tree. From this common ancestor, new species have emerged that are represented by the branches of the tree.