Which item is a common barrier to physical activity? a.) lack of confidence b.) lack of knowledge c.) lack of financial resources d.) lack of experience

A, lack of confidence. I say this because some people are not confident that they can be a better person physically, so they give up.

Adescription of  congestive heart  failure, its symptoms, risk factors, and treatment. to the  heart muscle  other than by artery or blood  flow  problems; signs of  heart  failure may not  meanthe patient has  heart  failure and they quit alcohol, or at least consume alcohol within the national recommended  limits.