A professional football player's multi-stage fitness tests results range is A. 57-70 ml/kg/min
B. 75-100 ml/kg/min
C. 40-50 ml/kg/min
D. 52-56 ml/kg/min

i think it's the first one because doctors aren't the ones who get rid of the old needles. most of them time it's not even doctors who give you shots, it's nurses.

maria should use the source. it has been peer reviewed.

explanation:

peer review is the assessment of work by at least one individuals with comparable skills as the makers of the work. in the scholarly world, insightful peer review is regularly used to decide a scholastic paper's appropriateness for production so maria should use the source as it has been peer reviewed   even she could not determine the author.