Q: Answer the following question given this paragraph: Scientists think that protists are the oldest eukaryotes. If so, they must have evolved from prokaryotic cells. How did this happen? The endosymbiotic theory provides the most widely-accepted explanation. That's because it is well supported by evidence. Q: What do many scientists think are the oldest eukaryotes? A:

Pick your answer from:
A). prokaryotes;
B). plants;
C). arthropods;
D). protists;
The answer is:
D).