@elimayerson Same with E!

These questions really reveal to me how much better the Split method worked. D would have been wayyy more attractive if I had used the Sequential method.

What helped me understand this is that the stimulus established a positive correlation where completing chess program = higher GPA, and concluded that completing the chess program was the cause of the higher GPA.

Answer C changes the cause to be the desire to be members of an after school club, and therefore weakens the argument.