Which role do proteins play in the body? A. They provide long-term energy storage.
B. They provide short-term energy storage.
C. They provide structure to form DNA and RNA molecules.
D. They provide structure for body tissue, hair, and fingernails.

I believe it’s D. Because Protein has many roles in your body. It helps repair and build your body's tissues, allows metabolic reactions to take place and coordinates bodily functions. In addition to providing your body with a structural framework, proteins also maintain proper pH and fluid balance