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. Pieces of music are complicated, but they can be grouped into
three classes.
B. Every musical score has three crucial elements.
C. Musicians have to pay attention to three things when they play
n Musical scores can be grouped into three main categories.

faulty parallelism is a grammar construction where there is no balance in the parts of a sentence they have a similar meaning but the grammar structure is not equivalent.

the correct version of this faulty parallelism in the sentence is:

jefferson wrote the declaration of independence, and he was the nation's third president.

the problem with the first version is that the sentence:

"jefferson was both the writer of the declaration of independence"

presents jefferson as both a subject and an agent for the verb "write" because if he was "the writer" then the declaration of independence was written by him, besides that fact, the sentence presents a dependent clause.

while the second sentence:

he was the nation's third president.

presents a basic subject+verb+object structure

so, to give a proper balance to the structure, or better said, to give a parallel structure, we must write a basic s+v+o structure in both sentences:

jefferson wrote the declaration of independence, and he was the nation third president.

ur answer is in the it