Which of the following letters is a vowel?

Explanation

The word vowel comes from the Latin word vocalis, meaning "speaking",because in most languages words and thus speech are not possible without vowels. In writing systems based on the Latin alphabet, the letters a, e, i, o, u, and sometimes y are all used to represent vowels. A vowel is also an isolated sound - you can sing or shout it - you can't do that with other letters.