A I think might be wrong but I have took the test before
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>
That means that the blueberry muffin she's eating every morning is making her gain weight, and on top of that, she's eating a breakfast sandwich. Which is so much calories.
