## **Core Concept**
The question assesses the developmental milestones of a 1.5-year-old child, focusing on cognitive and motor skills. At this age, children typically exhibit specific abilities that are crucial for their overall development. Understanding these milestones helps in identifying any potential developmental delays.

## **Why the Correct Answer is Right**
At 1.5 years, children usually have developed certain skills that are considered typical for their age group. The correct answer, **pointing to body parts**, is a significant milestone. Around 18 months, children start to identify and point to body parts when named, such as the nose, eyes, and ears. This skill reflects their growing cognitive abilities and understanding of body anatomy.

## **Why Each Wrong Option is Incorrect**
- **Option A:** This option is incorrect because, although 1.5-year-old children are beginning to build their vocabulary and imitate words, the specific skill mentioned here does not accurately represent a hallmark developmental milestone for this age group.
- **Option B:** This option is incorrect as it does not specify a clear developmental milestone that a 1.5-year-old child would typically achieve.
- **Option D:** This option is incorrect because, while children at this age are learning to combine two words together (like "mama go"), the complex sentence structure implied here is beyond the typical language skills of a 1.5-year-old.

## **Clinical Pearl / High-Yield Fact**
A crucial developmental milestone for a 1.5-year-old child is being able to **point to body parts** when asked (like nose, eyes). Pediatricians often test this during routine check-ups to assess cognitive and language development. Failure to achieve this milestone could indicate a need for further developmental evaluation.

## **Correct Answer:** .