1. True- because scientific theory means that <span>idea supported through research that attempts to explain existing observations or predict new ones.</span>2. False- because a cross-sectional means that its a study that is about different groups.
3. B-<span>An extraneous variable clarifies the relationship between the independent and dependent variables.</span>
They speed up your heart rate and get your body loosened up for further exercises
I think it is False but I'm not 100% sure
The answer is A. Social media does not accurately represent all aspects of health
