Question

Several groups of researchers conducted experiments to study how students' diets affected their performance in school. Researchers asked students to record what they ate every day for a year. The findings suggested that students who ate a higher amount of vegetables as compared to protein tended to have better grades. What can the researchers validly claim based on these findings?

Answer 1

School children should try to eat more vegetables if they want to improve their grades.
The American diet is deficient in the vitamins and minerals that help with mental processes.
Students with higher grades have parents who are better educated about diet.
There may be a correlation between a diet high in vegetables and better grades.

Answer 2

Is it the first one? I'm not sure.

Answer 3

yep, it's the first one! Hey I answered my own question!!