What characteristic is true of a vegan diet?

A vegan diet is characterized by the exclusion of all animal byproducts. This includes not only meat but also dairy products, eggs, and any other food items derived from animals. The primary focus of a vegan diet is to avoid contributing to animal suffering and exploitation, which is why all forms of animal-derived ingredients are omitted.

Other options may suggest the inclusion of certain animal products; however, they do not align with the fundamental principles of veganism. The choice that highlights the exclusion of animal byproducts captures the essence of a vegan diet accurately, emphasizing its comprehensive approach to avoiding anything resulting from animal sources.