The correct option is D Glycine
Essential amino acids are those that are essential in the diet. In other words we cannot create them through our own metabolism.
The 10 essential amino acids are Phenylalanine, Threonine, Tryptophan, Methionine, Leucine, Isoleucine, Lysine, Valine, Arginine and Histidine.
Hence glycine is not a essential amino acid.