Question

copper is ______useful metal​

Answer 1

Answer: A

Explanation:

Here we gotta insert an article in this situation thus we have namely three articles - A, An, The.

As we already know An is used before vowel sounds. And here the u in useful doesn't give a vowel sound so an doesn't apply here.

And THE is mostly used an emphasis and used mostly in secondary purposes.

So the A article is what applies here as we are only talking about copper metal here. Thus a is what that suits here.

Hope this helps.

Answer 2

THE ANSWER IS A

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