The statement “But changes came in the family . . . ” serves which of the following purposes? A.
to describe the erratic life of young teenagers
B.
to emphasize the speaker’s family connections
C.
to hide the anger the speaker feels toward the situation
D.
to indicate a shift in tone
E.
to contrast childhood with adulthood

I believe the answer is E because later on in the sentence she states that she is going to school in Jacksonville. " But changes came in the family when I was thirteen, and I was sent to school in Jacksonville"

It doesn't sound like she has any anger in the sentence, she's not stating any family connections, nor is it about her life a young person. The only other option I see being right is D. As it is changing the tone of the next paragraph

the long and short of it is its probably E

I'm still taking the test so I don't know how right this is.

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.