You gotta give the paragraph or sentences that will help me elaborate the answer (:
<span>d. inconstancy is the answer</span>
Tanner uses his computer to highlight the word in Bold faced type.
Based on the definition of appositive, this is a noun or noun phrase that is used to rename the another noun beside it. Basing on the given sentence above, I believe that it does not have an appositive. The nouns are Joe and Tulips, but no other noun that renames either of the two.
Hope this helps bro.
