Two Infants of Different Ages, Diego and Hannah, Are Tested

Multiple Choice

Two infants of different ages, Diego and Hannah, are tested with the preferential-looking technique to determine their visual acuity. A series of black-and-white-striped patterns are presented individually next to a gray square. Diego can distinguish stripes that are narrower than the stripes Hannah can distinguish. Compared with Hannah, Diego has

A) a smaller retina.
B) better object segregation.
C) more cones.
D) better contrast sensitivity.