QUESTION TYPE: Strengthen
CONCLUSION: The diet of early humans was very different from ours.
REASONING: They had fewer dental problems than we did.
___________
- Healthy teeth would have no problems, while early humans had some problems (“fewer”). So they weren’t necessarily eating “healthy.” The conclusion only claims they were eating differently.
- Always remember: “some” could mean 1-2 skeletons. It won’t do anything except disprove the statement “No early humans had a lot of cavities.”
- That’s nice, but we’re trying to conclude their diet was different, not similar.
- This would weaken the argument, showing that it wasn’t diet but age that caused the smaller number of cavities.
- CORRECT. Yes. This means that differing levels of cavities indicate that diet likely differed as well.
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