PLEASE HELP QUICKLY What is the purpose of certification for musculoskeletal careers?

A. present awards for specialization and training in particular areas of the body
B. grant confirmations of competence to perform a particular task
C. earn credentials that grant a provider permission to practice in a particular field
D. provide evidence of continuing medical education following formal training

What is one way that vance might have been able to prevent this injury?

[120 total points] (public health) in one of the largest human experiments ever conducted, in 1954 a randomized controlled trial was run to see whether a vaccine developed by a doctor named jonas salk was effective in preventing paralytic polio. a total of 401,974 children (ages 6–9), chosen to be representative of those who might be susceptible to the disease, were randomized to two groups: 200,745 children (the control group c) were injected with a harmless saline solution (a placebo) and the other 201,229 children (the treatment group t) were injected with salk’s vaccine.what was the point of giving saline solution to the children who didn’t get the vaccine? explain briefly.

Make a prediction about that person’s wellness and justify your prediction using two or more complete sentences.