The answer would be A. This is because swiftlier is not a word and most swiftly is the wrong context for this sentence.
Answer:
D. That he believes it happens to everyone
<span>Secretariat was an American Thoroughbred racehorse who, in 1973, became the first Triple Crown winner in 25 years.
He died in 1970.
</span>
D. Dear Rosanna, I just heard your good news use correct punctuation
You will never put anything else except the comma after dear... in any letter.
