chantal has frontal lobe damage. she is doing a problem-solving task in which she has to choose the red object out of many choices. she can easily complete this repeatedly, but when the experimenter asks her to choose the blue object on a new trial of the task, she continues to choose the red one, even when the experimenter gives her feedback that she is incorrect. chantal is displaying a. perseveration. b. decay. c. agnosia. d. sensory memory.