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[zagreus77]

P: All students surveyed said they prefer outdoor classes, and most said they prefer flexible homework schedules.

(A): (Those who preferred flexible homework schedules rarely listed this as being "very important.")

(A): (That which is preferred by more people in a group makes those people happier.)

C: Therefore, outdoor classes make students happier than do

This question trades on a fallacy that most implies not all. Thus, the assumption, that which is preferred by more people in the group does not lead to the conclusion. If the stimulus said most, but not all, or something similar, it would follow validly, but not as it stands.

[noah]

P: All students surveyed said they prefer outdoor classes, and most said they prefer flexible homework schedules.

(A): (Those who preferred flexible homework schedules rarely listed this as being "very important.")

(A): (That which is preferred by more people in a group makes those people happier.)

C: Therefore, outdoor classes make students happier than do

This question trades on a fallacy that most implies not all. Thus, the assumption, that which is preferred by more people in the group does not lead to the conclusion. If the stimulus said most, but not all, or something similar, it would follow validly, but not as it stands.

You're tearing it up! Just fixed it.