Which sentence uses dashes correctly?
a. nelson—my dog—chases squirrels—and then naps in the sun.
b. potatoes for the soup are washed and peeled—ready to be sliced.
c. "should i add this—? " he began as the egg rolled off the counter.
d. cheddar cheese and—a sliced pickle—make a tasty sandwich.

Brutus: but as he was ambitious, i slew him. . who is here so base that would be a bondman? if any, speak, for him have i offended. who is here so rude that would not be a roman? if any, speak, for him have i offended. who is here so vile that will not love his country? if any, speak, for him have i offended. i pause for a reply. which rhetorical device does brutus use in this excerpt?