The argument has two main points of evidence:
• Children shared toys with siblings more than with non-siblings; and
• An adult was present through this.
In the conclusion, the author suddenly jumps to ‘
an authority figure’ instead of ‘
an adult’. This for sure is one of the two main assumptions:
(1) An adult who was present was an authority figure; and
(1) The only (or the main) difference between sibling-sharing and sibling non-sharing was the presence of this adult (there weren’t any significant circumstances that also influences this change).
Going through answer options, we need to find some strengthener of the assumptions above:
Quote:
A. the toys in the room were new to the children, rather than toys they had previously played with at home.
This factor would be present both with or without an adult in the room, so it’s
not a strengthener. Quote:
B. the observing adult was a parent of the siblings, rather than a stranger or non-relative adult.
When the adult is also a parent,
it strengthens the first assumption that it’s an authority figure (and not just a random adult who may have no impact on children’s perception at all).
Quote:
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.
Again, this factor would be present for both situations, with or without an adult in the room, so
it’s not strengthening anything. Quote:
D. the room had more toys available than usual, making it easier for children to find and share multiple toys.
Again, this factor would be present for both situations, with or without an adult in the room, so
it’s not a strengthener. Quote:
E. the adult explicitly encouraged the children to share, regardless of whether the other child was a sibling or a non-sibling.
If anything, this would rather be a weakener, because the conclusion says the children ‘are more inclined’ to share, which supposes their personal predisposition. However, when an adult explicitly tells them to do so, we aren’t sure what their actual inclination might have been. Additionally, the conclusion deals with being ‘observed’ by an adult, not directly following their advice – which again
doesn’t help this answer to strengthen the conclusion in any way. Therefore, the correct answer is B.Posted from my mobile device