Which sentence correctly incorporates non-restrictive appositives with commas?
Answer and explanation
Correct answer: A. Dr. Hoda, a distinguished biochemist at Cairo University, delivered the keynote address.
- Step 1: A non-restrictive appositive provides supplementary non-essential information and must be set off by a pair of commas: one before and one after the phrase.
- Step 2: 'a distinguished biochemist at Cairo University' is correctly enclosed between commas.
Answer
Dr. Hoda, a distinguished biochemist at Cairo University, delivered the keynote address.
Why not the others: The sentence 'Dr. Hoda a distinguished biochemist at Cairo University delivered...' omits both commas entirely; the sentence with only the opening comma omits the closing comma before 'delivered'; the sentence 'Dr. Hoda a distinguished biochemist, at Cairo University...' places commas erratically, separating the prepositional modifier from the appositive.
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