Which of the following sentences most clearly uses imagery to create a negative mood? a. "how dare you! " bonnie said. "you know as well as i do that we can never get this project done without fred and dominick! " b. swallows flittered back and forth in the treetop, seemingly at play among the twigs and leaves of the old and mighty maple. c. never had gary looked upon a sight so dreadful and melancholy, and he knew he would never shake the terror from his mind. d. beneath the surface of the putrid swamp came a gurgling that suggested the ghosts of those who died here were drowning still.