Question

What is a polypeptide?
A: a folded protein molecule
B: a molecule of two amino acids
C: a bond between amino acids
D: a string of amino acids

Answer 1

its a chain, actually , of amino acids …..

   confused between D ,  and c 

but its most likely D 

Answer 2

D.  a string of amino acids

Amino acids bond into a long string, or chain, called a polypeptide. When the polypeptide chain twists and folds, it forms a protein.