The plot begins with a nightmare: king arthur sits above "hideous deep black water" and then falls into a pit of snakes and monsters. this nightmare is an example of

A. mood

B. foreshadowing

C. setting

D. tone

The correct answer is B) foreshadowing.

The nightmare is an example of a foreshadowing.

King Arthur has a nightmare at the beginning of the plot. In that nightmare, he sits above "hideous deep black water", and then falls into a pit of snakes and monsters. What King Arthur dreamt can be interpreted as a foreshadowing.

Foreshadowing is a term that means that we get a sign in advance to what is coming. It could be a warning of what is coming in the future. When writing a story, the author can include foreshadowing in some passage to catch the reader attention on something that is going to occur in the chapters coming.