which sentence includes a restrictive clause?\ni often see my middle school english teacher shopping at the…

which sentence includes a restrictive clause?\ni often see my middle school english teacher shopping at the mall.\nthe english novelist charles dickens also wrote plays and articles.\nthe ceramic cups birgit bought at the garage sale are all chipped.\namerican literature, which we study in 11th grade, is my favorite subject.
Answer
Brief Explanations:
A restrictive clause is essential to the meaning of the sentence and is not set off by commas. In "The ceramic cups Birgit bought at the garage sale are all chipped", "Birgit bought at the garage sale" is a restrictive clause identifying which ceramic cups are being referred to. The other sentences either have no such essential - defining clause or have a non - restrictive clause (set off by commas as in the last option).
Answer:
The ceramic cups Birgit bought at the garage sale are all chipped.