Answer:
The answer is B.
Step-by-step explanation:
The logical explanation is that fossils from animals are changing over time caused by enviroment change ,natural disaters,astronmical events,and so on.These organisms need to adapt over time and so there features change.For Example the dragon fly used to be as big as a bus now that it has adapted and changed from when the cretaceous period it is as small as your index finger.