Yes They do Hope that helps
Answer:
A.he stretched out his arms toward the dark water in a curious way, and, far as I was from him, I could have sworn he was trembling. Involuntarily I glanced seaward — and distinguished nothing except a single green light, minute and far away, that might have been the end of a dock. When I looked once more for Gatsby he had vanished, and I was alone again in the unquiet darkness.
Explanation:
What characters say :) Because dialogue essentially means talking or speaking of a character (the others are different types of literary devices)
They focus on the most important part of your essay – the thesis statement.
Reason being is because a comma is essentially a pause in a sentence. Sometimes that isn't the case. However, ninety percent of the time its a pause simply think about where a pause should be in any sentence.