I think it would be ‘problem and solution’ but i haven’t read the article because it isn’t linked. however ‘problem and solution’ does sound like it would fit best :)
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.
The answer is A.
I hope this helped! :)
(Also sorry I'm a lil' late.... This will help other people with the same problem I guess... XD)
D. Babysit for you next weekend? Sure, I'll just cancel my trip to Disney
World. It probably would have been mildly entertaining, but that's O.K.