Answer:
Secondary
Explanation:
The secondary structure of a protein represents the specific conformation of segments of its polypeptide chain. These conformations are mostly formed when its amino acids interact with each other and form one or other type of weak interactions. For example, the alpha helix is a type of secondary structure of proteins that is formed when every first and the fourth amino acid form hydrogen bonds between them. It gives the polypeptide chain a helical structure and represents the secondary structure of that protein.