Question

which sentence is correct?
\dont touch the poison ivy\ warned billy!
\dont touch the poison ivy\! warned billy.
\dont touch the poison ivy!\ warned billy.

Explanation:

In direct speech, the exclamation mark (or other punctuation like a period, question mark) should be inside the quotation marks when it belongs to the quoted sentence. The third option places the exclamation mark inside the quotes as part of Billy's warning, while the first has an exclamation outside (incorrectly placed) and the second splits the punctuation from the quote (incorrect).

Answer:

"Don't touch the poison ivy!" warned Billy.