Final answer:
The signal 'molto ritard' indicates that a composer wants 'much' slowing down of the tempo, particularly at the end of a musical piece.
Step-by-step explanation:
The term molto ritard is used in music to direct musicians to significantly slow down the tempo of the piece. Molto is an Italian word meaning 'very' or 'much,' and ritard is an abbreviation of 'ritardando,' which instructs to gradually slow down the speed of the music. When a composer includes the signal molto ritard in a piece of music, particularly at the end of a piece, they are requesting that the musician perform with much slowing or a pronounced deceleration of the tempo.