Anna's father tried a low-carb diet for a while, but stopped when he became aware of a new diet called "paleo." This is an example of

A) a fad.
B) fashion.
C) a social dilemma.
D) contagion theory.

Low-Carb Diet

A dietary plan that reduces carbohydrate intake in favor of proteins and fats, aimed at weight loss or health maintenance.

Paleo

Often associated with the Paleolithic diet, which is based on the presumed dietary patterns of ancient humans, emphasizing whole foods and limiting processed foods.