An Experiment Was Conducted in Which a Person Was Talking

Multiple Choice

An experiment was conducted in which a person was talking to a young adult stranger when two workers carried a door between this person and the young man.Another young man was switched with the original stranger.Which of the following was one of the conclusions of this study?

A) Only half the people who were tested this way noticed the switch.
B) More older persons did not notice the switch because of poor visual acuity.
C) More college students did not notice the switch because they were in a hurry and thinking about getting to their next class.
D) Ninety-eight percent of those tested this way noticed the switch.