Which of the following behaviors indicate that a 6-month-old infant is meeting expected developmental milestones? Select all that apply.

Choice A reason: Building a two-block tower is a fine motor skill typically achieved around 12–15 months. A 6-month-old is not expected to demonstrate this ability. Choice B reason: Transferring objects between hands is a milestone commonly reached around 6 months. It reflects improved coordination and bilateral hand use. Choice C reason: Creeping and standing with assistance are gross motor milestones usually seen closer to 9–12 months. They are not expected at 6 months. Choice D reason: Grasping objects is a key milestone for 6-month-olds. It shows developing hand-eye coordination and fine motor control. Choice E reason: Rolling over is typically achieved between 4–6 months and is a foundational gross motor skill. Its presence indicates appropriate neuromuscular development.