Read the excerpt from "Lessons of Dr. Martin Luther King, Jr." We have witnessed truckloads of grapes being dumped because no one would stop to buy them. As demand drops, so do prices and profits. The growers are under tremendous economic pressure.

We are winning, but there is still much hard work ahead of us.

The details in this passage best support the theme that

standing up for others takes courage and sacrifice.
people can make a positive change by working together.
sometimes people have to be unfair to achieve justice.
it is often difficult to take action against others.

to eliminate ambiguous remote or broad reference it is necessary to focus on anaphoric reference. by definition "anaphoric reference means that a word in a text refers back to other ideas in the text for its meaning." the references should be clear and leave no room for ambiguity.

in the first case the pronoun it probably refers to the car but it has not been mentioned before so we should replace it for the car. in doing so the statement becomes clear.

in sentence number   two   the pronoun he refers to charles dickens the author. yet, the first half of the sentence is about the book a tale of two cities. to repair this it would be better to rephrase the first half : after i read   a tale of two cities by dickens, he so as to remove the remote reference.