Answer:
9 amino acids are considered essential because the body cannot produce them.
Step-by-step explanation:
The 9 amino acids your body cannot produce on its own are histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine.
These acids you must get from your diet (what you eat). That is why they are considered essential.