Answer:
The corect answer is c can be made by the animal"s body from other substances and is not readily absorbed by the gastrointestinal tract.
Explanation:
Accordings to our body"s demand there are 2 types of amino acids
1 Essential amino acids These amino acids are not synthesized in our body as a result we have to intake them through diet. Example phenylalanine ,methionine,threonine,valine.
2 Non Essential amino acids These amino acids are synthesized within our body as a result there is no requirement to intake them through diet and they are not readily absorbed by the gastrointestinal tract. Example Glycine, Alanine,Serine,Aspartic acid.