Punctuation at the end of a sentence indicates a complete thought.
The different punctuation at the end of a sentence are mostly period ("."), Question mark ("?"), Exclamation mark ("!").
If you are posing a question, use a question mark (?) for punctuation.
A comma is a punctuation mark that separates phrases in a sentence. It looks like ,
The missing punctuation mark is a period.
Could you please clarify which punctuation mark you are referring to?
An interrogative sentence ends with a question mark.
A question mark is a punctuation mark used to end an interrogatory sentence.
!
declarative
At the end of a sentence.
A question mark (?) goes at the end of an interrogative sentence.
An ellipsis is a punctuation mark consisting of three dots (), used to indicate a pause or omission in a sentence.