Lilia owns a fleet of taco trucks that operate downtown and wants to know why office work$$rs choose to buy lunch from her trucks. She is fairly sure most customers have one of three reasons$-$price, quality, or location$-$but she wants to know which reason is the most frequent reason for purchasing. Lilia will probably use a survey with Blank questions to a$$dress her research problem.

observation$-$based

open$-$ended

experimental

closed$-$ended

unstructured