Chelsea is writing a paper about the value of running every day. She wrote this thesis statement: Running every day is essential. Chelsea’s teacher has asked her to improve her thesis. Which is the best choice for Chelsea to use as her thesis statement?

1. Runners report that the sport is a lot of fun.
2. Running is a beneficial activity that helps improve both physical and emotional health.
3. Endurance runners need to build muscle strength.
4. Runners need to have good shoes, but they are often more expensive than other kinds of shoes.