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    Question

    In the following question, three sentences are given, revolving around the same theme or idea. Decide which of the sentences are grammatically and meaningfully correct and mark the answer accordingly. 

    1. Much of these organisms serve as food sources for bigger organisms, like fish. 

    2. Marine phytoplankton also fixes about half the carbon dioxide that gets released into Earth's atmosphere. 

    3. For this reason, some have suggest manipulating plankton to stem global warming.

    A Only 2 Correct Answer Incorrect Answer
    B Only 1 and 2 Correct Answer Incorrect Answer
    C Only 1 and 3 Correct Answer Incorrect Answer
    D Only 2 and 3 Correct Answer Incorrect Answer
    E All 1, 2 and 3 Correct Answer Incorrect Answer

    Solution

    Only 2 is correct, which makes A the right answer.  1 - replace MUCH (used for modifying uncountable nouns) with MANY (used for modifying countable nouns) as ORGANISMS is countable. 3 – replace the base form verb SUGGEST with SUGGESTED as the present perfect tense construction HAVE + VERB will take the past participle form of the verb. 

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