Can you reinterpret the question please? I read this book in grade 10 and answered some questions like these.<span />
Monologue is spoken by one character, usually to themselves.
Dialogue is spoken by multiple characters
• Keep your phone on silent
• Do not kick/push others' seat
• If you carry a baby with you make sure he doesn't disturbs others
• Do not damage the seats
• Do not forget your belongings in the hall
• Make sure you do not spill any edible items you carry
To intoduce the characters, setting and a little bit of the plot
I would answer :
The whale was a missile blasting from beneath the surface
hope I helped