A specific learning disorder in reading is most likely to manifest in reading fluency

According to Ernest Hilgard, hypnosis may cause

a. severe psychosis. b. a loss of control of one's behavior. c. withdrawal symptoms for a repressed emotion. d. dissociation state or a "split in awareness."

Which of these seems to make it more likely that a visual scene change will be noticed?

a) The attention task in which you're engaged is especially demanding. b) The element that changes is in the periphery of the scene. c) The element that changes is physically similar to the objects being attended. d) There is a mask between the original scene and the changed scene.