To answer this question, we need to understand the process of respiration and the movement of carbon dioxide in the body.
During respiration, oxygen is taken in and carbon dioxide is produced as a waste product. The exchange of gases occurs in the lungs, where oxygen is taken up by the blood and carbon dioxide is released from the blood.
Option A) Carbon dioxide diffuses out of the lungs - This option is correct. After the exchange of gases in the lungs, carbon dioxide diffuses out of the lungs into the surrounding air during expiration.
Option B) Carbon dioxide diffuses out of the blood - This option is correct. As the blood reaches the lungs, carbon dioxide diffuses from the blood into the alveoli in the lungs to be expelled during expiration.
Option C) Carbon dioxide diffuses into the lungs - This option is incorrect. Carbon dioxide is actually expelled from the lungs, not taken in.
Option D) Carbon dioxide diffuses into the blood - This option is incorrect. Carbon dioxide is produced as a waste product in the body's tissues and is transported via the blood to the lungs to be expelled.
The correct answers are B (out of the blood) and C (into the lungs). Carbon dioxide diffuses out of the blood and into the lungs during respiration.