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 ("!").
An interrogative sentence ends with a question mark (?). This punctuation is used to indicate that a question is being asked.
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.
A question mark.