The lungs and respiratory system work closely with system to make sure oxygen reaches all the cells of our body ? ? a. circulatory b. digestive c. integumentary d. nervous ? ?

A) circulatory it helps the oxygen move around in your body.

Circulatory, because the circulatory system helps blood travel and all of that stuff which some how relates to your lungs

Stand or kneel behind the child and wrap your arms around his or her waist. locate the navel with one or two fingers in the middle of the child’s abdomen. just above the navel and well below the lower tip of the breastbone

The answer might be d