Arrange common motor milestones for a child in the most typical developmental order. 1. Crawling 2. Sitting (unsupported) 3. Running 4. Standing 5. Walking Choose the correct sequence from earliest to latest.

Introduction / Context:
This question evaluates knowledge of typical gross-motor development. While individual variation exists, pediatric guidance generally lists the progression toward independent ambulation as sitting → crawling → standing → walking → running.

Given Data / Assumptions:

• Sitting independently stabilizes the trunk.
• Crawling builds coordination and strength.
• Standing indicates adequate balance and leg strength.
• Walking is coordinated, independent steps.
• Running develops after confident walking.

Concept / Approach:
Order by prerequisite motor control from proximal stability (sitting) to dynamic movement (running).

Step-by-Step Solution:
Sitting (2) usually precedes Crawling (1).Crawling (1) precedes Standing (4).Standing (4) precedes Walking (5).Walking (5) precedes Running (3).

Verification / Alternative check:
Pediatric milestone charts widely use this representative sequence, acknowledging normal variation.

Why Other Options Are Wrong:
Any order placing running before walking or standing before sitting conflicts with developmental prerequisites.

Common Pitfalls:
Assuming crawling always precedes sitting; many kids sit before crawling, which is the basis for the chosen order.

Final Answer:
2, 1, 4, 5, 3