1. A recent study reports that students who just finished playing a pro-social video game were more likely to help others than students who had played a neutral or anti-social game. For this study, what is the independent variable?
(A) The students who were given the pro-social game.
(B) The students who were given the neutral or anti-social game.
(C) The kind of game given to the students.
(D) The helping behavior of the students.

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