GMAT Critical Reasoning (CR) | Tall children can generally reach high shelves easily

Tall children can generally reach high shelves easily. Short children can generally reach high shelves only with difficulty. It is known that short children are more likely than are tall children to become short adults. Therefore, if short children are taught to reach high shelves easily, the proportion of them who become short adults will decrease.

A reasoning error in the argument is that the argument

(A) attributes a characteristic of an individual member of a group to the group as a whole
(B)
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