A scientist finds a fossil that she thinks might make a good index fossil. Which characteristics does this fossil most likely have? Select two options
A: It is the remains of an organism still found alive today.
B: It is the remains of an organism that was alive for only a short time.
C: It is the remains of an organism that is found in abundance nearby.
D: It is the only fossil for this type of organism that has ever been found.
E: It is the remains of an organism that lived in a narrow geographic area.