Final answer:
A healthy vegetarian might combine different plant foods for reasons including obtaining all essential amino acids, a variety of nutrients, and more satisfying meals.
Step-by-step explanation:
A healthy vegetarian might combine different plant foods for several reasons. First, specific plant foods do not contain all of the essential amino acids, so vegetarians must select an appropriate mixture of foods to get all essential amino acids. For example, combining beans and rice can provide a complete protein with all nine essential amino acids. Second, combining different plant foods can help ensure a variety of nutrients in the diet, including vitamins, minerals, and antioxidants. Lastly, combining plant foods can help create more satisfying and flavorful meals, making the vegetarian diet more enjoyable.