Intensity to me means putting so much effort on something you’re working on or doing ect, it does make a difference on your health because of the amount of energy or thought you out into it.
If the level is moderate. that's the answer.
Answer:
A.
first line of defense
Explanation:
The first line of defense acts to prevent external substances from entering the body hence sneezing out the pollen acts to expel the pollen from entering his windpipe thus is the first line of defense.