Answer: Vegetarians can combine two or more plant protein sources that, taken together, provide all the essential amino acids. The correct answer is A.
Step-by-step explanation:
There are numerous foods that a vegetarian can eat to get their essential amino acids each day. Foods that are great to eat to get those amino acids are; peanut butter, legumes, nuts, pumpkin seeds, and grains.
The amino acids that are needed in the body are; tryptophan, histidine, isoleucine, lysine, leucine, methionine, threonine, valine, and phenylalanine. On food source that contains all of these amino acids is quinoa.