Congratulations, you just independently discovered the sixth paragraph of the article! "But many students choose the seemingly selfish option. Why? Perhaps to

Congratulations, you just independently discovered the sixth paragraph of the article! "But many students choose the seemingly selfish option. Why? Perhaps to increase their own grades, or perhaps because they fear that they will be taken advantage of. No one wants to be the chump that chooses fewer points when they could have had more."