Which developmental milestone should a child achieve by age 2?

By age 2, a child is expected to achieve the developmental milestone of stacking blocks. This skill is an important aspect of fine motor development. At this age, children typically demonstrate an improving ability to manipulate objects and develop hand-eye coordination. Stacking blocks requires not only dexterity but also cognitive skills such as spatial awareness and problem-solving, as they must figure out how to balance the blocks on top of each other.

While other developmental milestones are also significant, they occur at different ages. Jumping in place is usually achieved around ages 2 to 3, and running with coordination typically develops a bit later as gross motor skills continue to mature. Using simple sentences generally emerges as a language skill slightly further along, typically expected as children approach the ages of 2 to 3. Therefore, stacking blocks is the most appropriate answer for what a child should achieve by the age of 2.