Noble gases are because they have outer shell electrons. A. very reactive, 1 B. inert, 8 C. inert, 0 D. very reactive, 8

B

Explanation:

They don't react to other elements because their valence shell is already full.

The protein is an organic compound which is made up of the amino acids methionine, arginine, and leucine etc. 

Explanation:

Most of the amino acid are linked with others amino acid through peptide linkage to form proteins. The peptide bond is formed between the two amino acid involving carboxylic and amino group.The proteins produce by this way may be simple, conjugated and derived proteins.