Explanation:
It indicates that the word is an adjective. Joy is a noun. Joyous is an adjective.
Answer: B
Explanation: B because if you can't prove your information then your expository essay wasn't ivestigated deeply enoulgh and needs to be revised if you want a better grade.
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"An architect" is an appositive in this sentence because it is renaming Mike as an architect, and "Mike" comes before it in the sentence.