Which of the following pieces of evidence would best support the opinion: Middle school curriculum should include at least 30 minutes of daily physical activity or recess.

a. 42 percent of United States schoolchildren get their exercise through daily recess, rather than P. E.
b. Recess is a great opportunity for students to both learn and practice social skills.
c. Many schools across the country are limiting or eliminating recess for students whose bodies are still developing, and who need to move.
d. Recess is important because it gives students a much needed brain break.