Answer:
You use an a when the next word <u>doesn't </u>have a vowel at the beginning of a word.
You use an when the next word <u>does</u> have a vowel at the beginning of a word.
Explanation:
It's all about grammar and how words go together or don't go together in different ways.
Al should be your answer. hope that helped!
I would think every word would be included but i feel like there is a part of the question missing.... :/