Vegetarians, especially vegans, need to eat combinations of plant-based foods. By combining the complete proteins in plants, they should get all needed essential amino acids.
What is the main reason vegetarians, especially vegans, need to eat combinations of plant-based foods?
A) To ensure they consume enough fiber in their diet
B) To obtain a balanced intake of vitamins and minerals
C) To provide all necessary essential amino acids
D) To reduce the risk of developing chronic diseases