A nurse is collecting data from a child who is descending stairs by placing both feet on each step and holding on to the railing.
This behavior is developmentally appropriate at which of the following ages?
4 years.
6 years.
5 years.
3 years.
The Correct Answer is D
On average, by 3 years of age, children can walk up and down stairs, one foot per step, with no support.
Choice A is incorrect because it is not developmentally appropriate for a 4-year-old child to place both feet on each step and hold on to the railing while descending stairs.
Choice B is incorrect because it is not developmentally appropriate for a 6-year-old child to place both feet on each step and hold on to the railing while descending stairs.
Choice C is incorrect because it is not developmentally appropriate for a 5-year-old child to place both feet on each step and hold on to the railing while descending stairs.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
One of the common symptoms of autism spectrum disorder (ASD) is difficulty with social communication and interaction, which can include avoiding or not keeping eye contact.

Choice B is not an answer because sitting quietly in the caregiver’s lap during the interview is not a typical symptom of ASD.
Choice C is not an answer because smiling when shown a stuffed animal is not a typical symptom of ASD.
Choice D is not an answer because crying and running to the door when the caregiver leaves the room is not typical symptom of ASD.
Correct Answer is B
Explanation
A. Lateral incisors are present:At 6 months, infants typically begin teething, but the lateral incisors usually do not appear until around 9 to 13 months. The first teeth to emerge are usually the lower central incisors.
B. Posterior fontanel is closed:The posterior fontanel, or the soft spot at the back of the baby's head, typically closes by 2 to 3 months of age. Therefore, it is expected to be closed by the time the infant is 6 months old.
C. Infant's birth weight is tripled:By 6 months, infants generally double their birth weight. Tripling of birth weight is more commonly expected by the end of the first year.
D. Infant sits well without support:Most infants begin to sit without support around 7 to 9 months. At 6 months, they may sit with some support but are not yet expected to sit well independently.
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