B is correct answer.
Couplet is a rhyming words from at the end of 2 consecutive lines.
Hope it helped you.
-Charlie
Thanks!
The correctly punctuated sentence is c: <span>"I know what happened," whispered the boy. "I saw the whole thing from my window." Quotations marks go around direct dialogue like in this example. A comma comes at the end of the dialogue before the final quotation mark.</span>
