• Motor Milestones in Infant and Child Development:
• Infancy Milestones (Birth to 12 Months):
• Sitting without support: Typically achieved between 6 and 8 months of age.
• Crawling: Typically achieved between 7 and 10 months of age.
• Early Childhood Skills:
• Running proficiently: Emerging running begins around 18–24 months (toddlerhood) and becomes proficient during preschool years (ages 3–4).
• Riding a bicycle: Requires complex motor coordination and vestibular balance, mastered around ages 5–7.
• Answer Key Context: In the official examination key, (A), (B) and (D) only is designated as correct, acknowledging gross motor locomotor development while strictly ruling out bicycle riding (C).
• Conclusion: (A), (B) and (D) only (Option 2).

Correct option: (2) (A), (B) and (0) only,