Question

Which line conveys a cynical tone?

"I'm not going to let the city force me to take down my yard sign!" declared the angry woman.
"Sure I'll vote—everyone here is going to make it to the polls. But nothing, not one single thing, will change."
It was a pleasant day. Not the day you would want to spend flipping through the numerous channels on television. The day called for some outdoor activity. Baseball with the gang?
She was going on and on without a break. His head was splitting. "When will she stop?”

Answer 1

The line which contains a cynical tone is: "Sure I'll vote - everyone here is going to make it to the polls. But nothing, not one single thing, will change".
Cynical means distrusting of something, you don't believe something will change.