**Core Concept**
Visual development in infants is a complex process that involves the maturation of various visual pathways and systems. The ability to follow moving objects is a critical milestone in this process, reflecting the integration of sensory and motor functions.

**Why the Correct Answer is Right**
The ability to follow moving objects, also known as "tracking," is a sign of binocular vision and the integration of visual information from both eyes. This skill is thought to be mediated by the maturation of the corticogeniculate pathway, which connects the primary visual cortex to the lateral geniculate nucleus. Infants typically develop this skill around 1-2 months of age, as their visual system becomes more refined and their ability to track objects improves.

**Why Each Wrong Option is Incorrect**
**Option A:** 6 weeks - This is too early, as infants at this age are still developing their basic visual skills, such as detecting light and dark.

**Option B:** 4 months - This is too late, as most infants have developed the ability to follow moving objects by 2 months of age.

**Option C:** 8 weeks - This is still too early, as infants at this age are still refining their visual skills and developing their ability to track objects.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that visual development in infants is a dynamic process, and milestones such as following moving objects can provide valuable insights into an infant's visual system and overall neurological development.

**Correct Answer:** C. 2 months.