Hi! Your answer is: b. a dash
Here's why:
A. comma- it will not be a comma because it doesn't make sense.
B. dash- it is the correct answer, "School, sports, family- what more could this graduate want?" Sounds pretty good to me.
C. semicolon- It sounds good to me, but not entirely correct. "School, sports, family; what more could this graduate want?" Semicolons are used to combine indepent clauses.
D. period- you don't want to make it two sentences. Like this: School, sports, family. What more could this graduate want? It doesn't sound correct... and both will be incomplete sentences (or fragments).
I really hoped I helped! If you need more you could ask me.
-Dawn
