15. protein is essential to the overall health of the body because it a. sustains life and keeps body systems in good repair. b. "bulk up" muscles. c. keeps hair and nails healthy. d. gives the body collagen, which protects the organs.

Jen is reviewing information about a new treatment for arthritis pain that she saw on an informational website. most of the information is testimonials from satisfied users. which best indicates that this information is unreliable? it is not paid for by product sponsors. it is on a website that is not run by professionals. its claims are based mostly on anecdotal evidence. its claims are not supported by the provided information.