Choice A reason:

Walking independently is a milestone typically achieved around 12 to 15 months.

Choice B reason:

This statement is correct. Rolling from back to stomach is an appropriate milestone for a 9-month-old.

Choice C reason:

Solving complex puzzles is more characteristic of cognitive development in older children.

Choice D reason:

Parallel play is more common in toddlers, not infants.

Choice A reason:

This statement is correct. The Ages and Stages Questionnaire (ASQ) is a tool commonly used to screen for developmental milestones, including language development.

Choice B reason:

The Denver Developmental Screening Test focuses on various developmental domains but may not be specific to language.

Choice C reason:

The Modified Checklist for Autism in Toddlers primarily screens for autism spectrum disorders, not general language development.

Choice D reason:

The Pediatric Symptom Checklist assesses psychosocial and emotional well-being rather than specific developmental milestones.

Choice A reason:

Counting backward from 100 is more indicative of numerical skills than overall cognitive development.

Choice B reason:

Cooperative play with peers is related to social development.

Choice C reason:

Solving complex math problems is more characteristic of advanced cognitive abilities.

Choice D reason:

This statement is correct. Engaging in imaginative and pretend play is a suitable task for assessing cognitive development in a 6-year-old.

Choice A reason:

This statement is correct. Turning pages in a book involves fine motor skills and hand-eye coordination.

Choice B reason:

Building a tower with blocks is more indicative of gross motor skills.

Choice C reason:

Running and jumping on one foot involve gross motor skills.

Choice D reason:

Throwing and catching a ball also primarily assess gross motor skills.

Choice A reason:

Engaging in parallel play is common in toddlers, not necessarily 4-year-olds.

Choice B reason:

This statement is correct. Playing cooperatively with peers is a milestone in social development for a 4-year-old.

Choice C reason:

Solving simple math problems is more related to cognitive development.

Choice D reason:

Reading simple sentences is more indicative of language and literacy development.

Choice A reason:

This statement is correct. The Pediatric Symptom Checklist (PSC) assesses emotional and behavioral well-being.

Choice B reason:

The Ages and Stages Questionnaire focuses on general developmental milestones, not specifically emotional well-being.

Choice C reason:

The Modified Checklist for Autism in Toddlers screens for autism spectrum disorders, not general emotional well-being.

Choice D reason:

The Denver Developmental Screening Test assesses overall developmental domains but may not specifically address emotional well-being.

Choice A reason:

Drawing simple shapes with a crayon involves fine motor skills.

Choice B reason:

Stacking blocks is a fine motor skill, not a gross motor skill.

Choice C reason:

This statement is correct. Walking up and down stairs with assistance involves gross motor skills.

Choice D reason:

Using a fork and spoon during mealtime is more related to fine motor skills.

Choice A reason:

Participation in team sports primarily addresses physical and social development.

Choice B reason:

This statement is correct. Creative and artistic activities support cognitive development in a 10-year-old.

Choice C reason:

Independent problem-solving is an important cognitive skill to encourage.

Choice D reason:

Exposure to diverse academic subjects generally contributes positively to cognitive development.

Choice A reason:

Rolling over typically starts around 4 to 6 months.

Choice B reason:

This statement is correct. Grasping objects placed in the palm is an appropriate milestone for a 3-month-old.

Choice C reason:

Responding to the sound of a rattle is a sensory milestone but may vary among infants.

Choice D reason:

Sitting independently usually begins around 6 to 8 months.

Choice A reason:

This statement is correct. Tanner Staging is a tool commonly used to assess puberty-related physical milestones.

Choice B reason:

The Ages and Stages Questionnaire focuses on general developmental milestones, not specifically puberty-related changes.

Choice C reason:

The Modified Checklist for Autism in Toddlers screens for autism spectrum disorders.

Choice D reason:

The Pediatric Symptom Checklist assesses psychosocial and emotional well-being rather than puberty-related changes.