B is the most efficient answer
Answer:
Spirometry is a type of pulmonary function test (PFT), a noninvasive procedure that provides important information about how well the lungs are working. More specifically, it reveals how much air is moving through the lungs and how quickly as you breathe through a tube.
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I would say B, as morality is knowing the difference between right and wrong, and I think A would be an ethical issue
The answer is A. antioxidants. Antioxidants is the defense
system of the body, it is also the involved prevention of the damage of the
cell; examples are aging, common reason of cancer and also different kinds of diseases.
There’s always a need to have antioxidants because our body needs protection
for the damage by the oxidation may cause.
