I think the answer is A, but I'm not sure
Wash his hands if she wants you to be that specific
True, sleep problems indeed are a quite often occurence among children as well as adults - they do occur quite often but don't necessarily occur all the time for people to whom it does happen. At the same time, when someone suffers from sleep problems, this doesn't necessarily mean that he cannot sleep at all.
Answer:
C. The intrathoracic pressure decreases.
Explanation:
Inspiration is when air is moved into the lungs. This occurs when:
- The diaphragm contracts, which increases the size of the chest cavity.
- Then the lungs expand, which decreases intrathoracic pressure, causing air to rush into the lungs.
