The following is the answer—the retyped sentence as per the directions in the "question".
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<span>In an effort to realize his dream, DUNCAN, an aspiring astronaut, spends hours studying to prepare for his college entrance exams.
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Answer to the second part of the question: The noun to which the appositive refers in the above sentence is: "astronaut".
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{Additional note: the "appositive" in the [rewritten] sentence is "Duncan". "Duncan" (name of student and prospective astronaut) is the "appositive"—in the form of an "appositive noun" [as opposed to an "appositive phrase".]}.
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Jenna didn't know which package went to which person and instead of going back home to ask her mom which is which she gave her Great Aunt Sally a jersey that was supposed to be Joey's and she gave Joey the package that was supposed to be her Great Aunt Sally's.
Answer : c explanation : with is not one if the 5 w’s
Today's lunch is better than yesterday's