Question

All the girls were singing.
Girls is a common noun
Girls is a proper noun
Girls is an abstract noun​

Answer 1

Girl is a common noun, Because It doesn't refer a Particular Girl or The Girl's Name. And, It isn't a sense of feeling either, you can't "Feel" a Girl.

Answer 2

Answer:

Girls is a common noun

Explanation:

As we are not talking about a specific girl

And it is also not an abstract noun as it is not expressing an idea or emotions

Hope it's helpful

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