Sarah is writing a paper explaining why public schools should provide healthy lunches to students, and she has several potential research questions. Which is her best option?• How could eating healthier food benefit students?

• What are the healthiest types of food?
What are students' favorite kinds of food?
Does the general public want to eat better?

The best potential research question for Sarah's paper is: How could eating healthier food benefit students? This question directly relates to the main objective of the paper, which is to explain why public schools should provide healthy lunches to students. It allows her to explore the potential positive outcomes of implementing such a program.