Which sentence is punctuated correctly? tanna president of the national honor society truly enjoys volunteer work. the old house, that my father grew up in, is being completely renovated. my sister, who is a waitress at billy’s big burger shack, is sixteen years old. the bird that built a nest in the oak tree, appears to have an injured wing.

The sentence that is correctly punctuated is option C. My sister, who is a waitress at Billy’s Big Burger Shack, is sixteen years old.

In this sentence, the part between commas is a subordinate or dependent  clause.

A subordinate clause—also called a dependent clause—will begin with a subordinate conjunction or a relative pronoun and will contain both a subject and a verb.

In this case it is set off with commas since it is providing additional information of the subject.

just say it's your friend did it and you had no idea?

past mark brainest if can