Today’s SAT question of the day is a classic writing multiple choice question. We are comparing a dog’s sense of smell…to what? As it is written, this sentence is comparing a dog’s sense of smell to humans. But we can make it more logical by making our comparison parallel and comparing a dog’s sense of smell to a human’s sense of smell. 

This error can be tricky to catch, but I would almost guarantee that you will see it in on your SAT in some way.