The correct answer to this open question is the following.
Although there are no options provided and further reference to this question, we can answer the following.
Shari is taking notes in preparation for her oral presentation on the impacts of excessive homework on high school students. She finds a study that shows that having less homework would allow students to engage in other enriching activities and spend more time bonding with family and friends. This information could fit into her presentation because "It shows a positive effect of the solution."
As the study she found, shows that having less homework would allow students to engage in other enriching activities and spend more time bonding with family and friends. it makes it a positive effect of the solution because the affirmation clearly states that less homework in high school should allow students to enrich their lives in participating in other positive activities such as athletics, artistic activities, the marching band, and many others. This will also help students to spend more quality time with family and friends to talk about important issues that affect youngsters of this age.