Well, that depends on what you ate that day.
The best answer for the blood vessels' valves would be these are veins that would then help in preventing the back flow of blood because the walls have small muscle to pump the blood back to the heart.Hope this is the answer.
Answer:
Bacillus Calmette–Guerin vaccine is a vaccine primarily used against tuberculosis. It is named after its inventors Albert Calmette and Camille Guerin. In countries where TB or leprosy is common, one dose is recommended in healthy babies as soon after birth as possible.
Inactivated polio vaccine (IPV) is the only polio vaccine that has been given in the United States since 2000. IPV is given by shot in the leg or arm, depending on the patient's age. Oral polio vaccine (OPV) is used in other countries. CDC recommends that children get four doses of polio vaccine.
Explanation:
Your answer will be A) reactive depression because it is the only one of the options that has something to do with stress/trauma