happypuppy
In September 1985, more than seven decades after the Titanic was wrecked in the North Atlantic Ocean during its maiden voyage, a Franco-American expedition, one of the numerous expeditions launched to find the ship, found it lying at the bottom of the sea and split in two
parts, disproving the theory that the ship would be found intact.
(A) parts, disproving
(B) parts, and disproving
(C) parts, which disproved
(D) parts; they disproved
(E) parts, and this disproved
(A) parts, disproving
Present participle 'disproving' at the end and after a comma modifies the entire previous clause.
It is the effect of what happened in the previous clause. Someone found it lying at the bottom of the sea split in two parts and this finding "disproved" the theory. The 'disproving' was the effect of the "finding."
All ok.
(B) parts, and disproving
found it lying at the bottom ... and disproving ...
Incorrect. The ship was not disproving anything.
(C) parts, which disproved
As far as possible, we do not use 'which' for the entire previous clause. It should have a noun antecedent. In some rare cases, we do use it for a clause too, but here we have the option of using present participle which works best.
(D) parts; they disproved
The expedition is singular so use of 'they' is incorrect.
(E) parts, and this disproved
Not clear what does 'this' refer to. Our option (A) works much better.
Answer (A)