Question

Why does Spiegelman use spikey speech bubbles?
Responses

to show that the speakers are angry about the situation
to show that the speakers are angry about the situation

to show that the announcements are loud enough for everyone to hear
to show that the announcements are loud enough for everyone to hear

to show that the speech was originally in another language

Answer 1

To show that the announcements are loud enough for everyone to hear — the spiky balloons indicate loudness/shouting (public announcements), distinguishing them from normal speech.