We would expect this to be true—think of how small a piece of gum is! This answer doesn’t explain why chewing gum helps to prevent cavities, though, so it doesn’t reconcile the paradox in the stimulus.

While this might be relieving to hear on a personal level, it doesn’t help to reconcile the paradox at hand. We need information about how chewing gum after meals helps to prevent cavities, and this answer choice doesn’t give us that.

This is helpful! Sugar leads to cavities because it causes enamel to dissolve, but chewing gum protects enamel. It makes sense, then, that chewing gum after meals helps to prevent cavities even if the gum contains some sugar.

This answer choice has nothing to do with the cavity-prevention benefits of chewing gum after meals, which is what we need the answer to explain!

This answer doesn’t help because it has nothing to do with the impact that chewing gum has on cavity formation. The “overall health of the oral tract” could refer to factors other than cavities.