Select the sentence that has an incorrect shift in pronoun number. Matteos dropped his books on the table in front of them and ran outside. He ran for about half a mile. Matteos finally stopped at the
basketball court on the corner still fuming over the events of the afternoon. There he could calm down about those things he'd said that
offended Rachel. Eventually, his mind quieted until Rachel herself walked up to the court.

How does this excerpt develop the central idea that espionage during the civil war was often carried out by untrained citizens? it enhances the reader’s understanding by explaining why training was unnecessary. it changes the reader’s perception of what information a spy was able to obtain. it explains an ordinary person’s motivation for conducting espionage against the enemy. it adds moral complexity to espionage, due to the use of secret and dangerous methods.