When you visualize the action in this passage from “blues ain't no mockin bird,” what effect do you think granny's silent stare has on the twins?

yeh, did he jump? ” say terry all eager. and granny just stared at the twins till their faces swallow up eager and they don't even care any more about the man jumpin.
a.
it makes them angry.
b.
it makes them ashamed.
c.
it makes them even more curious.
d.
it puzzles them.