Answer:
I think it's the last one, "It moves the plot forward without the narrator describing every event". :)
On page 113 there is a personification or a symbolism where it shows the light as something related to the desires of gatsby. The artificial light represents the hopes and dreams of relieving what was lived with Daisy and once the lights turn off then it symbolizes the fulfillment of his desires
Answer:
Metaphor is used to describe a situation, a problem, a case in another way. Metaphors are used to describe something with something else. Thanks to the metaphor art, the message is given a vitality, depth and strong meaning. Since metaphors provide indirect narration, the message can be transmitted without personalization to the source. So he breaks down the resistance of consciousness and he processes his subconscious.
Demonstrating bravery huh? It doesn't seem too hard to explain. Say, for example your talking about a fictional story, right? Depending on what that said character does, depends on his/her bravery for he/she did. If you can implement something similar to that in whatever it was you had in mind, it might help.
I really hope this helps.