Based on the punctuation, the appositive that is actually restrictive is: B. The speaker owns more than one dog, because Zeus is a restrictive appositive.
What is restrictive appositive?
Restrictive appositive is actually known to be the type of appositive that narrows down the word which the appositive modifies. The use of restrictive appositive is necessary because of the meaning of the sentence.
We can see that option B is the appositive that is actually restrictive appositive.
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