<span>Moment-by-moment descriptions of events, rather than summaries
Sensory detail-words that convey how things look, sound, feel, smell, or taste
Vivid descriptive words, such as adjectives, adverbs, and figures of speech
all of the above
</span>
He persuaded the animals by using words like miserable to pull on the animals heart strings and show that he was right.
Answer:
Between failed and so.
"In 2021, three national power grids in India failed, so hundreds of millions of people were left without power."
I would go with D) It helps show the author's voice because the author is saying that the person is making him sad at night so u could say he is opening his feelings.