A 3-year-old child is assessed for fine motor development. Which activity best represents normal fine motor skill at this age?

Correct option is D

By 3 years, children can use both hands to mold and shape clay, showing developed fine motor control. Copying a circle comes slightly later (around 3.5–4 years).
Explanation of options: (a) ✘ Tower of 2 cubes is achieved at 15 months. (b) ✘ Scribbling begins around 18 months, earlier than 3 years. (c) ✘ Copying a circle is expected after 3 years, not exactly at 3. (d) ✔ Correct; molding clay is appropriate fine motor skill at 3 years.