I think it's most likely D because when I googled the definition it said something about gas so yeah
Reduces the amount of oxygen that reaches the body's tissues. Increases risk for blood clots. Damages blood vessels. Doubles the risk of stroke (reduced blood flow to the brain)
<span>Ab Roller Evolution is made of metal. It supports neck, head and upper body during workout. It is an upper body trainer: works chest and core. You can do push ups, sit ups, dips. By providing improved support, it reduces stress and strain on body.</span>
<span />Description above is from Amazon.
It is a good idea but has some problems with its design. There is no way to secure it on the floor during exercise. So it moves around when pushed against and would not provide support. A normal crunch will likely work out better.
Answer:
Humanitarian nursing is nursing without limits. It involves everything Western nursing does and more, as nurses put their skills to use in places like conflict zones, refugee camps, or places where healthcare would otherwise be non-existent
