Which statement about the recommendation for daily physical activity is true ?

a. it should be a vigorous
b. it should be a mix of moderate , low and vigorous
c. it should be continual and not broken into several sessions
d. it should be moderate to vigorous

Which statement describes the relationship between parenting choices and their effects on children? a) neglected children will show more empathy. b) encouraged children will show more curiosity. c) children with very permissive parents will be violent. d) children with resilient parents will work well with others.

How can a person  best  reduce the risk of injuries on the road?  

Mario was conducting research regarding the treatment of aids victims using stem cells. he found a source that was written recently and the author was known. unfortunately, he could not determine if it had been peer reviewed.