A recent study reports that elementary school students who were given a nutritious breakfas each morning had higher test scores

Question

A recent study reports that elementary school students who were given a nutritious breakfas each morning had higher test scores than students who did not receive the breakfast For this study what is the independent variable O The test scores for the students Whether or not a breakfast was given to the students O The students who were not given the nutritious breakfast O The students who were given the nutritious breakfast

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