A writer should hyphenate a compound modifier that contains an adverb ending in -ly.
comes after the noun it modifies.
comes before the noun it modifies.
contains an adjective ending in -ive.

yes its b

explanation:

to tese

to show how the cables work.

its specific purpose is to sell a product to people .

can i get brainliest!

b is the answer.   i sat on the lumpy sofa, totally exhausted, with a bad taste in my mouth, wondering what i should do next.