Answer:
the explanation
Step-by-step explanation:
Soliloquy will go into the 4th box because it means that the person is speaking in their heads and they are private so no one can hear it.
Prologue will go into the 1st one since is the first part of a book and it just sets the mood.
Foreshadowing will be in the 3rd box because you use it when you want to build suspense.
Aside will be in the second box since that is the only box left and it is the only box that is makes sense in.