Question

which terminal punctuation mark would you use to end this sentence? stop that at once choose 1 answer: a stop that at once? b stop that at once. c stop that at once!

Explanation:

The sentence "Stop that at once" is a command expressing urgency or strong request, so an exclamation mark (!) is appropriate. Option A uses a question mark (for questions), Option B uses a period (for statements), but the tone here needs an exclamation mark.

Answer:

C. Stop that at once!