An appropriate sensory-motor activity for a child up to eight months of age is

A. touching toys of different shapes, sizes, and textures.
B. playing with puzzles with a few large pieces.

C. drawing with crayons or markers.

D. stringing large beads on a shoelace.

I think it's A

Right!

I watched a six-month old who had never played with a ball play with a small one. He spent 20 minutes watching it roll across the floor, chasing it, and squeaking it. He learned what it could do -- and then lost interest. He'd mastered it.

To determine the appropriate sensory-motor activity for a child up to eight months of age, we need to consider their developmental stage. At this age, infants are typically beginning to explore their environment through their senses and developing their fine motor skills.

Option A, touching toys of different shapes, sizes, and textures, is indeed a suitable activity for an infant up to eight months old. This activity allows them to use their sense of touch to explore different sensations and textures, which helps in developing sensory awareness and fine motor skills.

Option B, playing with puzzles with a few large pieces, may not be appropriate for infants up to eight months of age. At this stage, infants are still developing their hand-eye coordination and grasping skills, and puzzles with larger pieces may not offer enough sensory stimulation or be developmentally appropriate.

Option C, drawing with crayons or markers, is more suitable for older children who have developed better fine motor control and hand-eye coordination. Infants up to eight months of age have limited grasp and hand control, so this activity may not be appropriate for them.

Option D, stringing large beads on a shoelace, might also not be suitable for infants up to eight months of age. While it does involve some fine motor skills, it requires more advanced hand control and coordination, which infants at this age may not have fully developed yet.

In conclusion, option A, touching toys of different shapes, sizes, and textures, is the most appropriate sensory-motor activity for a child up to eight months of age.