Which topic sentence would best start the following division paragraph? The key signature tells a musician where to play on an
instrument for the duration of the piece. The tempo
notations tell a musician how quickly or slowly to play the
music. Finally, there are the musical notes themselves,
combined in various ways in various rhythms. Without all
three of these things, musical scores would not exist as
we know them.
A. Musical scores can be grouped into three main categories.
B. Pieces of music are complicated, but they can be grouped into
three classes.
C. Every musical score has three crucial elements.
D. Musicians have to pay attention to three things when they play.