Which option describes a clause?

Responses

the structure of a sentence
the structure of a sentence - no response given

a group of words containing an adjective and a pronoun
a group of words containing an adjective and a pronoun - no response given

a group of words that are similar in meaning
a group of words that are similar in meaning - no response given

a group of words containing a subject and a verb working together

a group of words containing a subject and a verb working together