PLEAS HELP What form or rule is demonstrated in this sentence?

The blazing sun and stretches of sand--everything added to the fugitive's misery.

A. dash used as interrupter
B. dash used for summary
C. comma used with two or more adjectives preceding a noun

Why is mme. loisel "full of anxiety" when she asks to borrow the necklace? a. she is humiliated at having to borrow the necklace. b. she dreads going to the reception. c. she lacks confidence in her beauty. d. mme. forester gives her too many pieces to choose from