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I got rid of A and D first. Caused/causing the pollution of is an awkward and wordy way to say pollute/polluting.
E has a pronoun issue. "They" does not agree with "cargo".
In B, the use of "with" implies that the two events (the ship running aground and the cargo leaking) took place at the same time. This does not work because the ship was not already leaking as it ran aground. First, it ran aground, and then its cargo leaked.
C it is.













