"All of a sudden..." is a transition that shows suspense. It says something happened, but it didn't happen with any warning and it doesn't tell the reader up front what went on or if it was good or bad.
Answer:
Answer is option B
Explanation:
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The words remorse and regret are synonymous to each other. Meaning with deep regret and guilt. Therefore the correct answer to this question is letter "B. Synonyms". Homophones are words that sound similar to each other, and Antonyms are words that have opposite meanings with each other.