What is the significance of analyzing the comparisons between individuals, ideas, and/or events?

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.

Choose the item which best answers the question. which words are intended most to capture the reader's attention? 1) "students excel" 2)"stimulating multimedia interactive format" 3) "plenty of electives available"

Need some on this. which answer is it?