Which of the following can explain the results of this study?
A) Exercise decreases memory abilities.
B) More subjects with better memory were assigned to the Sudoku group than the exercise group.
C) Subjects in the exercise group paid less attention to the study list than subjects in the Sudoku group.
D) All of the above.

Question

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The Answer of Which of the following can explain the results of this study?
A) Exercise decreases memory abilities.
B) More subjects with better memory were assigned to the Sudoku group than the exercise group.
C) Subjects in the exercise group paid less attention to the study list than subjects in the Sudoku group.
D) All of the above.

Which of the Following Can Explain the Results of This