What do infants prefer to look at? lights
light colors
human faces and expressions
dark colors

Newborns prefer to look at photos and simplified drawings of faces with features arranged naturally/upright rather than upside down or sideways. They prefer photos of faces with eyes open and a direct gaze. They quickly learn to prefer their mothers' face to that of an unfamiliar woman.

Explanation:

Human faces

Explanation:

After human faces, bright colors, contrasting patterns, and movement are the things newborns like to look at most. Black-and-white pictures or toys will keep your baby's interest longer than objects or pictures with lots of similar colors.

well when looking at this if you think about it   negativley and positivley   react with each other and when the first layer gets full they add layers it starts with 2 on the first layer and it constantly goes on until the official number is there

treatments and vaccines : )