Final answer:
The correct group of gluten-free whole grains is option B: Amaranth, quinoa, millet, teff, buckwheat.
Step-by-step explanation:
The correct group of whole grains that are gluten-free is option B: Amaranth, quinoa, millet, teff, buckwheat.
Gluten is a protein found in wheat, barley, rye, and sometimes oats. It is harmful to people with celiac disease, causing damage to the digestive system.
Therefore, it is important for individuals with celiac disease to avoid foods that contain gluten, including wheat-based products like bread and pasta.