The circulatory system is very useful. This system transports the food nutrients, and oxygen to the body cells. It also delivers of carbon dioxide and waste products. This helps the respiratory system by transporting nutrients to keep the lungs clean, and healthy.
It is D, sharing appreciation for what is being said. Both A and B aren't crucial to being a good listener, in fact in practice they effectively draw attention to yourself, which would be fine if the question was regarding being a good conversationalist. Additionally, C is just completely irrelevant, that wouldn't even be a good conversation practice, let alone a trait important to listening.
Answer:
Definitely not. its taking the easy way out, and who said life is easy, there always better alternatives to make your life better like talking to a professional and doing something that keeps you busy and not makes you thing of the negative things going on in your life.
Explanation:
4-6 minutes, after the blood flow stops
