Which sentence contains a pun?
a. a humble life of peace and quiet is better than a splendid one with danger and risk.
b. it is better to be thought a fool than to open one's mouth and erase all doubt.
c. i could not remember how to throw a boomerang, but it eventually came back to me.
d. she shimmied on the shiny dance floor in her sheer and shimmery shoes.