What sentence requires revision to maintain a formal style?

A. Quakers like William Penn wouldn't pay taxes to support wars because they were against it, and this made people angry.
B. William Penn used his considerable wealth to assist his fellow Quakers in England, where they often faced persecution for their beliefs.
C. The Duke of York was good friends with William Penn, and he signed a charter granting an expansive territory that became known as Pennsylvania
D. Born into a distinguished family, William Penn joined the Religious Society of Friends, or Quakers, at the age of 22.

A. Quakers like William Penn wouldn't pay taxes to support wars because they were against it, and this made people angry.

Option A requires revision to maintain a formal style.

To identify the sentence that requires revision to maintain a formal style, let's examine the given options:

A. "Quakers like William Penn wouldn't pay taxes to support wars because they were against it, and this made people angry."
This sentence could be revised to maintain a formal style by removing the contraction and specifying who the "people" are. It could be revised as follows: "Quakers such as William Penn would not pay taxes to support wars because they were morally opposed to it, which enraged many individuals."

B. "William Penn used his considerable wealth to assist his fellow Quakers in England, where they often faced persecution for their beliefs."
This sentence is already written in a formal style, so it does not require revision.

C. "The Duke of York was good friends with William Penn, and he signed a charter granting an expansive territory that became known as Pennsylvania."
Similarly, this sentence is already written in a formal style, so it does not require revision.

D. "Born into a distinguished family, William Penn joined the Religious Society of Friends, or Quakers, at the age of 22."
This sentence is already written in a formal style, so it does not require revision.

Therefore, the sentence that requires revision to maintain a formal style is option A: "Quakers like William Penn wouldn't pay taxes to support wars because they were against it, and this made people angry."