14. In which instance would it be best to delay stating the main idea until after all the supporting details have been presented? When a topic is complicated and the writer needs to do more to help the readers

When an author wants to present all the evidence before taking a position

When an author is writing on an issue that most readers will agree with

When the topic of the essay will be new or unfamiliar to most readers

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.