Answer: the heart, the blood vessel, and the blood itself
Explanation: hope this helps
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.
Palm? I think it’s either palm or just the front of your hand haha
I need to see your answer choice in order to tell you which one the answer is! Add a picture and I’ll be glad to help
I would have to say either B or C.. I am leaning more towards C though.. hope this helps a little
