Which list best reflects the variety of common dietary protein sources mentioned in the lesson?

Only synthetic amino acid supplements and intravenous solutions, since whole foods do not provide useful proteins according to the lesson.

Edible rocks and minerals because they contain trace amounts of nitrogen that are directly incorporated into human proteins.

Meat, poultry, seafood, dairy, whole grains, legumes, nuts, and seeds.

Sugary beverages, fruit juices, candy, and refined sugars as primary sources of dietary protein in most diets.