Use the excerpt from the text How to Build a Fossil to answer the question. 

How to Build a Fossil

“The rain also turned the hillside above into mud. Some of the mud began to slide, faster and faster, down the hill. And right in the middle of breakfast, Wham! The poor iguanodon was rudely buried under a ton of mud.”

Why does the author use the word wham in the sentence?

(1 point)
Responses

to explain to the reader how mudslides work 
to explain to the reader how mudslides work 

to describe to the reader how noisy the mudslide was
to describe to the reader how noisy the mudslide was

to help the reader understand how unexpected

to help the reader understand how unexpected