Select the sentence containing a nonrestrictive clause. Remember, a clause has both a subject and verb.

The sky is blue, generally speaking.
The water is cold, but the sand is warm.
We, on the other hand, enjoy reading books.
The clown in the center, who is wearing overly large shoes, seems dazed.

Take a look at this online dictionary entry. language etymology middle english language, from old french language, from latin lingua ("tongue, speech, language”). noun 1. a form of communication using words either spoken or gestured with hands and structured with grammar, often with a writing system. 2. the ability to communicate using words. 3. nonverbal communication. 4. the vocabulary and usage in a particular field. 5. the words used in speech or a passage of text. 6. spoken or written words. which link would readers of this dictionary entry click if they wanted more information about the historical origins of the word "language”?