Final answer:
By 10 months, infants can grasp a rattle by the handle, use a crude pincer grasp, and move objects from hand to hand; however, building a two-block tower and placing objects into a container are skills usually seen around three years of age.
Step-by-step explanation:
A 10-month-old infant is expected to have certain fine motor skills according to developmental milestones. At this age, an infant should be able to:
- Grasp a rattle by the handle as their grip has become more controlled.
- Use a crude pincer grasp, which is using the tips of the thumb and forefinger to pick up objects.
- Move objects from hand to hand, a skill that typically develops around six months of age.
However, trying to build a two-block tower and placing objects into a container are skills that are typically developed later, during the end of the toddler stage, which is around three years of age.