Which sentence contains a punctuation error?

a.
my sister's mother in law lives with them, and everyone gets along fine.

b.
have you met my great-aunt marie raines?

c.
my mother wrote three children's books about the family farm.

d.
another hurricane is brewing in the mid-atlantic.

the price of our current war is high; it costs money and it costs lives.

but it does not cost our pride. it does not cost the guilt that would arise from knowing that we did nothing to intervene while our neighboring nations fell to despotic leaders.

it does not cost the terror of knowing that our allies are unstable. it does not cost the fear that we, too, will be next to fall.

which sentence most accurately explains why the speaker's use of the parallel structure is effective in this passage?

a. it underscores that disagreement will not be tolerated and will be dealt with swiftly.

b. it makes the speaker seem like a decisive and capable leader.

c. it emphasizes reasons to fight and inspires listeners to aid the war effort.

d. it establishes the speaker's credibility by acknowledging the difficulties of war.

they would have to clean it very clean