At Which of the Following Computerized Events Would a 6-Month-Old

Multiple Choice

At which of the following computerized events would a 6-month-old infant look longest?

A) A square bumps into another square, which then moves.
B) A square bumps into another square, which moves after a delay.
C) A square approaches another square but stops before bumping it; the second square does not move.
D) Two squares appear on screen and remain motionless.