Why does the author use the phrase "spark of hope" in a long walk to water and what does it mean?

Select all the correct answers. why do authors use rhetorical devices in essays?

How will charlie most likely change after his experience at the diner in part 2 of "flowers for algernon"? he should be kind to each person who crosses his path. he will be more sympathetic to those who are similar to the way he once was. he will attempt to the dishwasher receive the surgery he was given. he will react the same way each time he sees someone being treated unfairly.

Respond for free points because i don't have a question anymore.