Decompression sickness manifests ITSELF with joint pain and it can be fatal.
'Itself is a word that is usually used as the object of a verb or preposition to refer to to an inanimate thing or an animal which has been mentioned previously as the subject of the sentence.
Answer: part a is A and part b is C if not i am truly very sorry i tried to help.
Explanation:
What do you need help on?
