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<span>This statement is true. Two forms of physical activity might indeed be exercise programs and sports activities. There are so many different choices for sports and exercise in the modern world that it is possible to design a fitness regime where you are doing something different every day.</span>
Answer: Manipulation of the Independent Variable
Again, to manipulate an independent variable means to change its level systematically so that different groups of participants are exposed to different levels of that variable, or the same group of participants is exposed to different levels at different times.
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