Margie is introduced to the following people when she arrives at the party: Derek, Kayla, Calvin, Debbie, Rose, Melanie, Garrett, Tom, Francis, Jane, John, and Vincent. According to the serial-position effect, it will be most difficult to remember the names of
Derek, Kayla, John, and Vincent.
Francis, Jane, John, and Vincent.
Derek, Kayla, Melanie, and Garrett.
Rose, Melanie, Garrett, and Tom.