The risk-benefit assessment is widely used in the field of medicine. Apart from being therapeutic, it is a known fact that synthetic medicines also carry side effects. However, if the healthcare provider believes that a certain medication outweighs the side effects, then he or she will prescribe the said medicine. This is the very reason why the concept of risk-benefit is truly vital.
Assuming your ‘is’ in your question is ‘if’, you’re answer is True.
I believe the answer is a psychiatrist.
Most veins carry deoxygenated blood from the body back to the heart.