Your first option is correct.
EXPLANATION:
your first option is correct because this is a grammar question. When you use "an" you're using it in front of a vowel. The only sentence starting with a vowel is the first one. The others don't sound right when you use "an" in front of it instead of "a".
I hope I helped! :)
The answer to this question is false
Answer:
Adjectives are words that help describe someone or something. By using adjectives in a story, it helps readers better understand the story.
Explanation:
An author claims that "athletes caught using performance-enhancing drugs should be sentenced to prison."
The choice that best describes the reason the author provides is that “it is unverified. It does not cite a source to show where the information was located.”