What type of vegetarian only includes eggs in their diet, excluding milk?

The correct choice is ovo-vegetarianism, which specifically refers to a type of vegetarian diet that includes eggs but excludes any dairy products. Ovo-vegetarians consume eggs as their primary source of animal protein while avoiding milk and its derivatives entirely.

In contrast, lacto-vegetarianism includes dairy products but does not incorporate eggs. Ovo-lacto vegetarianism encompasses both eggs and dairy, allowing for a wider variety of foods. Simply labeling someone as vegetarian could imply a broader range of dietary practices without specifying egg or dairy inclusion.

Understanding these distinctions is important for properly identifying dietary restrictions and preferences, especially in fields related to nutrition and lifestyle consulting.