As a general rule, the larger

Answer choices

1. A

   Too Weak4% picked this

   Early humans were much more likely to groom themselves than are the members of

   This fails to explain why early humans did so.

   4%
2. B

   Correct84% picked this

   Early humans developed languages, which provided a more effective way of maintaining social cohesion

   Why this is right

   This explains how the main purpose of social grooming could be accomplished in some other way thereby reducing the need for these early humans to engage in social grooming.

   Skill tested: Paradox · how this choice captures the argument's function is the move to repeat next time.

   84%
3. C

   Contradiction9% picked this

   Early humans were not as extensively covered with hair as are other primates, and consequently they had less

   The statements suggest that the primary reason for social grooming is to maintain social cohesion and this does not free the early humans from the need to maintain social cohesion.

   9%
4. D

   Out of Scope3% picked this

   While early humans probably lived in large groups, there is strong evidence that they hunted

   Distinguishing the size of the group for hunting from the size of the group for living does not explain the lack of social grooming with these humans.

   3%
5. E

   Deepens the Paradox1% picked this

   Many types of primates other than humans have fairly large neocortex regions and display

   This makes it all the stranger why humans with large neocortex regions would not groom one another.

   1%