Bunuel
Psychologist: In a study, children were observed in a room filled with various toys. When an adult was present in the room, the children were more likely to share toys with their siblings than with non-siblings. This suggests that children are more inclined to share with family members when they feel they are being observed by an authority figure.
The psychologist's argument would be most strengthened if it were true that, during the study, the children exhibited increased sharing behavior when:
A. the toys in the room were new to the children, rather than toys they had previously played with at home.
B. the observing adult was a parent of the siblings, rather than a stranger or non-relative adult.
C. the siblings were younger and appeared to need help understanding how to use the toys, compared to non-siblings who were adept at using the toys.
D. the room had more toys available than usual, making it easier for children to find and share multiple toys.
E. the adult explicitly encouraged the children to share, regardless of whether the other child was a sibling or a non-sibling.
Conclusion: Children are more inclined to share with family members when they feel they are being observed by an authority figure.
Task: StrengthenA. the toys in the room were new to the children, rather than toys they had previously played with at home.
Out of scope, it doesn't matter whether the toys are new are old. They are shared with siblings rather than non-siblings are per the psychologist.
B. the observing adult was a parent of the siblings, rather than a stranger or non-relative adult.
It rather hurts the argument as whenever there is an authoritative figure, may it be related or non-related one, kids share their toys with siblings. The above statement means that parent makes the kid share toys with siblings, non-related people won't matter.
C. the siblings were younger and appeared to need help understanding how to use the toys, compared to non-siblings who were adept at using the toys.
This agains weakens the argument.
The above statement indicates that siblings were new to toys, which made them share it with each other. The cause is not being a sibling, but it is the non-familiarity with the toy.
D. the room had more toys available than usual, making it easier for children to find and share multiple toys.
Irrelevant.
Number of toys is not a concern.
E. the adult explicitly encouraged the children to share, regardless of whether the other child was a sibling or a non-sibling.
Apt!
Adult encouraged to share toys with everyone, but the child chose to share it with his or her sibling.
This strengthens. It is in line with the argument and the conclusion.
E is the correct answer