Which dietary restriction is associated with a gluten-free diet?

A gluten-free diet is specifically designed to exclude gluten, which is a protein found in certain grains such as wheat, barley, and rye. The focus of this dietary restriction is on eliminating foods that contain this particular protein, making the option that refers to excluding albumin protein from specific grains the correct choice.

Gluten is not only a protein of concern for those with celiac disease or gluten sensitivity but is also associated with certain health issues for individuals affected by these conditions. By avoiding gluten, these individuals can alleviate symptoms and prevent damage to the intestines.

The other options mention excluding sugars, dairy, or fats, which do not directly relate to gluten or the reasons for following a gluten-free diet. Excluding sugars may be relevant for certain medical conditions like diabetes, while dairy and fat restrictions pertain to different dietary considerations, but none of them specifically address the primary goal of a gluten-free diet, which is to avoid gluten-containing grains.