Question

In May of 2003, two scientific studies comparing standard low-fat diets to low-carbohydrate diets appeared in the New England Journal of Medicine. In both studies, after following the diet for six months, participants lost more weight on the low-carbohydrate diet than the low-fat diet. Based on the information given, what statement provides the least support for the scientific reliability of these studies?

Answer 1

The studies were repeated with similar outcomes.

The studies were published in a peer-reviewed journal.

The studies were conducted over a long time.

The studies were used to explain the natural world.

Answer 2

I think it's D. But I could be wrong..