Test: GMAT Verbal

Replace the underlined portion with the answer choice that results in a sentence that is clear, precise, and meets the requirements of standard written English.

1.

Knowledge of core concepts such as particle types, models of the atom, and chemical bonding is required for students to fully understand chemistry.

core concept such as particle types, models of the atom, and chemical bonding is required

core concepts such as particle types, models of the atom, and chemical bonding is required

core concepts such as particle types, models of the atom, and chemical bonding are required

core concepts—particle types, models of the atom, and chemical bonding—is required

core concepts such as particle types, and models of the atom, and chemical bonding is required

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