Hmm. Let's see. I don't think it's D. And recognizing sources in stress does help, but I think the first thing is knowing that someone has too much stress, so i think the answer is A.
Answer:
Blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. As the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.
The answer is both a and b
Answer:
A. Enable effective interaction
Explanation:
