I am pretty sure that<span> the following which signifies a return to music that has been played before is the second option from the scale represented above : </span><span>B.Da capo sign. I choose this one because it has meaning "from the beginning'' which nicely coincides with the statement in the question.
Do hope it helps!
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If im correct it would be A .
A. key signature , the key signature is a list of all the sharps and flats in the key that the music is in.
