Add the correct punctuation mark from the given options.

Oh god  ___   She is crying so much

The correct answer is: Exclamation mark (!)

In the sentence, 'Oh my god_____ she is crying so much ', an expression of concern is working which is why the girl is crying so much. Also, a worrying emotion is implied by the phrase 'Oh my god', so the correct punctuation mark here is definitely an exclamation sign (!).