Here's a question and a few possible answers: 

Q: Prescriptions being the specialty the store charges higher prices for most other goods, I'd be paying for convenience if I bought a hair dryer where?
Possible A: drug store, high end store, beauty salon, box, bathroom

Why is "drug store" an answer aligned with human common sense? 


drugs are sold at a drug store so buying anything else could result in higher prices as they are based on convenience.