Final answer:
A 3-month-old infant like Sam is still developing visual abilities and might not have fully good eye alignment and distance vision. These skills are better established around six months of age, alongside improved color and depth perception.
Step-by-step explanation:
Expecting a 3-month-old infant like Sam to have good eye alignment and distance vision may be slightly premature. At this age, while some visual capabilities, such as tracking objects and focusing on faces and objects up to about 46 cm away, are developing, the infant's visual system is still immature. The full acuity of adult vision is not typically reached until closer to six months of age, when the ability to discriminate colors and depth perception significantly improve.
Specifically, while newborns have some color perception, primarily distinguishing red, their ability to see the full spectrum of colors and understand three-dimensional depth takes time to develop. The pathways in the brain responsible for processing visual information continue to mature throughout infancy. By six months, infants usually begin to engage with their environment more actively, which also aids in visual development. However, good eye alignment and clear distance vision are milestones that are not fully established at three months.