Question

11. Nouns that represent things that cannot be touched, heard or seen are known as A. concrete. B. proper. C. abstract. D. common.

Answer 1

C. abstract

it is thought of as an idea but has no physical or concrete existence.

Answer 2

Salutations!

 Nouns that represent things that cannot be touched, heard or seen are known as ------

 Nouns that represent things that cannot be touched, heard or seen are known as abstract nouns. Abstract nouns are associated with intangible things, like action, feelings, qualities etc.

Some of the examples of abstract nouns are: bravery, courage, confident etc.

Thus, your answer is option C.

Hope I helped :D