In English, periods and question marks should be placed inside the closing quotation marks if they are part of the quoted material. If the punctuation is not part of the quote but pertains to the overall sentence, it should be placed outside the quotation marks.
For example:
- He said, "I am going to the store."
- Did she say, "I will come"?
So the correct answer is inside the closing quotation marks for periods and question marks that are part of the quoted material.