Principle: It is healthy for children to engage in an activity that promotes their intellectual development only if engaging in that activity does not detract from their social development. Application: Although Megan's frequent reading stimulates her intellectually, it reduces the amount of time she spends interacting with other people. Therefore, it is not healthy for her to read as much as she does.

Question: The application of the principle is most vulnerable to criticism on which one of the following grounds?
Options:
A. It misinterprets the principle as a universal claim intended to hold in all cases without exception, rather than as a mere generalization.
B. It overlooks the possibility that the benefits of a given activity may sometimes be important enough to outweigh the adverse health effects.
C. It misinterprets the principle to be, at least in part, a claim about what is unhealthy, rather than solely a claim about what is healthy.
D. It takes for granted that any decrease in the amount of time a child spends interacting with others detracts from that child's social development.
E. It takes a necessary condition for an activity's being healthy as a sufficient condition for its being so.
Answer: "D"