Do you have "more fun" in a fun activity when there are others around to enjoy the activity with you? In their experiment, Reis et al. (2017) randomly assigned participants to one of three conditions involving the block game Jenga, where players build a block tower as high as they can while avoiding having it fall over. In one condition, the participants played alone. In a second condition, they played with a stranger. In the final condition, they played with a friend. After the game, participants were asked, "How much fun did you have playing Jenga?" with ratings of slightly to extremely on a 6-point Likert scale. All participants were escorted into the same laboratory and given the same instructions on how to play Jenga. The experimenter encouraged participants to do whatever they needed to do in order to enjoy their experience. Although the experimenter stayed in the room, the experimenter did not interact with the participants while they played the game. This was done to ensure that participants stayed on task and to permit the experimenter to surreptitiously take notes on how long participants spent building the tower. Results showed that participants reported having significantly less fun when playing alone than when playing with a stranger, though participants playing with a stranger had significantly less fun than participants playing with a friend. A. Did the study establish covariance (a change in one variable led to a change in the other)? Explain. B. Did the study establish temporal precedence (a change in one variable preceded a change in the other)? Explain. C. Did the study eliminate altenative explanations? Explain. D. Is the study design causal (experimental), correlational, or quasi-experimental?