Which sentence is punctuated correctly?
1."Put your science projects next to the seventh graders'," he instructed.
2. "Please hand out the worksheets to the students'," the teacher told me.
3. "Those backpacks are my sisters," Callie said.
4. "that dog is the Jones,' " my neighbor said.
The sentence that is punctuated correctly is:
3. "Those backpacks are my sisters," Callie said.