Question

iron is _____ useful metal (a, an, tha, none)​

Answer 1

Iron is a useful metal.

hope this helps

Answer 2

The answer is 'a.'

Iron is a useful metal.

• 'A,' 'an,' and 'the' are known as the articles that are used in a sentence. Articles are used to create the identity of an object in a sentence.

• 'An' is always placed before a word beginning with a vowel. Following this rule, 'an' should be placed before 'useful.'

• However, the word 'useful' begins with a consonant sound 'y.' Therefore, it will take the article 'a.'