Aniri,
An assumption in a GMAT argument is implicit information that is unstated but necessarily true. Like hidden nails holding up a table, it is an unseen support on which the argument rests. Since an assumption supports the argument, the negation of an assumption should tear down the argument (remove the nails and the table crumbles).
Here is a quick diagram for this argument:
(1)P Principal: less outdoor playtime -> less misbehavior
(3)C Author: Principal working counter to goals
(2)P Author: play outdoors -> less misbehavior
In this case, the author assumes that the effect of playing outdoors has a greater effect on misbehavior than does stricter punishment.
Right away, answer choices C, D, and E can be eliminated, as they are unrelated to or outside the scope of the argument. Answer choice B is the attractive distractor, as it is an assumption that the
principal makes, but not one that the author makes.
Answer choice A states
Not being able to play outdoors is unlikely to deter a junior high school student from misbehaving. When this statement is negated, we get
Not being able to play outdoors is likely to deter a junior high school student from misbehaving. If keeping kids indoors is likely to deter them from misbehaving, than the principal's plan is not counter to his/her goals and the author's conclusion falls apart.
The best answer is A
-dan
In an attempt to reduce misbehavior, the junior high school principal has decided to make punushments stricter, including restricting students from having playtime outdoors. However, this action is clearly counter to the principal's goals, as students who frequently play outdoors are less likely to misbehave.
Which of the following is an assumption on which the argument depends?
(A) Not being able to play outdoors is unlikely to deter a junior high school student from misbehaving.
(B) Students who have been puhished by not having playtime outdoors are less likely to misbehave again in the future.
(C) Students who are well-behaved do not tend to make friends easily and are not more likely to play outdoors as a result.
(D) The principal's suggested policy will not be protested vehemently by local parents who want their children to play outdoors.
(E) Playtime outdoors has not been demonstrated to have positive effects on the physical development of schoolchildren