SAT English Practice Question

The text states that an educational game increases middle school students’ accuracy in adding fractions. What is the most important piece of information that supports this statement? The psychologist chose a random sample of 35 students from all of the students at one of the middle schools in a large city. The psychologist found that students who played the game showed significant improvement in accuracy when adding fractions.

1. A.The psychologist chose a random sample of 35 students from all of the students at one of the middle schools in a large city.
2. B.The psychologist found that students who played the game showed significant improvement in accuracy when adding fractions.
3. C.The study showed that students who played the game showed significant improvement in accuracy.
4. D.The study used a random sample of 35 students from one of the middle schools in a large city.