Pulmonary veins are responsible for carrying oxygenated blood from the lungs back to the left atrium of the heart.
Answer:
cognitive
Explanation:
A cognitive disability is a term used when a person has trouble with communication, self-help, and social skills.
In general, for most things, A would be correct (Any time of the day). It kind of depends on what you ar collecting the sample for. I think the earlier the better but it doesnt usually matter.