...when you are in a parking lot heading toward the store and volunteer to take someone's shopping cart back?

A) It's nice but it won't save the polar ice caps. B) Every little gesture of consideration helps stave off total, universal social alienation. C) You should feel OK, because maybe you are starting one of those kindness chain-reactions. D) Get real. Those chain-reactions happen only in TV commercials. E) The mere fact that you would like to have a positive self-image is a good sign. F) Other.