Identify the sentence that contains a dependent clause. a. my sister is old enough to visit the city by herself. b. in my american literature class, we read short stories, poems, and plays. c. i know the student who is talking to the teacher. d. nobody at home ever cleans up the supper dishes.

C.  I know the student who is talking to the teacher contains a dependent clause.

The dependent clause in the sentence is who is talking to the teacher. This clause is dependent because it depends on the independent clause to complete its meaning, and it cannot stand alone as its own sentence. Also, the word who is an indicator that this is a dependent clause.