Problem: Sarah sneezed more than Natalie did because

My choice: Sarah had kept their pet in the house.

Problem: Emily was an experienced boxer, while Kayla was a novice, so

My choice: Emily gave weekly lessons.

Problem: Arthur preferred that the doctor insert the rubber probe into his rectum and not the plastic camera, because the

My choice: camera was bumpier.

Problem: Logan beats Dennis at chess on a daily basis, but

My choice:
Dennis is gaining knowledge of the game.