What dous the musical markink D. C. (Da capo) tell you to do

Go back to the beginning of the song and begin playing from the top again.

Explanation:

Da capo translates to "from the beginning". When you see this in your music, it means you play until the measure where you see "D.C" and then repeat from the beginning of the song.

answer; i believe the correct answer to be (trial films);