Sentence Correction (SC) | Re: A study by the Ocean Wildlife Campaign urged states to

A and B are wrong because of wrong usage of 'which' modifier and SV agreement ( a number of remedies + includes ) plural subject and singular verb.

C and E are wrong as Complex gerund can't be parallel to simple gerund ( after and non underlined part).

Option D is correct with all elements in list are parallel being simple gerund.

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