Passage Summary: A rule says kids' activities are healthy only if they don't mess with social growth. Megan reads a lot, which helps her brain but takes away from social time, so the author says her reading habit is unhealthy.

Conclusion: It is not healthy for Megan to read as much as she does.

Reasoning: A principle states an activity is healthy only if it doesn't hurt social development; Megan's reading stimulates her intellectually but reduces her social interaction time.

Analysis: The author is attempting to apply a conditional rule but stumbles on the definition of the terms. The principle establishes that 'not detracting from social development' is a necessary condition for an activity to be healthy. The author assumes that 'reducing the amount of time spent interacting' is equivalent to 'detracting from social development.' Look for an answer that points out this logical leap—it is entirely possible to spend less time with others without actually harming one's social growth.