You can use them to include explanatory words or phrases within quoted language:
a. commas
c. brackets
b. periods
d. all capitals

Which statement about “the jitling of granny weatherwall” most clearly describes streak of consciousness? a)in her narration, granny often gets distracted by random thoughts. b)granny feels disillusioned from her jitling from many many years ago c)brief moments of dialogue break up otherwise long sequences of description. d)the narrator often relies on metaphor to convey granny’s thoughts and feelings