Apsychology professor decides to play a practical joke on a colleague in the history department. while the historian is giving a lecture on the first day of class, the psychology professor interrupts and asks to speak with the historian outside the classroom. while they are conversing, all of the students leave through a back door and are replaced with a completely new group of students. upon returning, the history professor continues the lecture without noticing that the students are different, illustrating: a) change blindness.
b) inattentional blindness.
c) attentional blindness.
d) absentmindedness.