Diagram 1 shows the fossilized remains of the lower portion of a horse's leg. Each subsequent diagram shows the same portion of a horse's leg, but the diagrams are from progressively later time periods. Diagram 5 shows the most recent fossil.
What do these diagrams demonstrate?
A.
Modern horses have more toes than earlier species of horses.
B.
All living organisms have increased in size over time.
C.
Fossil evidence cannot be used to support evolution.
D.
fossil evidence can be used to show the evolution of a species over time
