The nurse performing a health history on a child asks the parents if their child has experienced increased appetite or thirst. What body system is the nurse assessing with this question?

A. Forward-facing in the front passenger seat: This position is not suitable for an infant. Infants should always be placed in a rear-facing car seat in the back seat of the vehicle to reduce the risk of injury in the event of a crash.

B. Rear-facing in the back seat next to a window: Placing an infant next to a window increases the risk for injury. The safest position for a car seat is in the center of the back seat

C. Rear-facing in the middle of the back seat: Although the manufacturer of the car seat will provide specifics regarding use, a child should remain in a rear-facing car seat until age 2 or until the child outgrows the height or weight limits of a rear-facing seat

D. Forward-facing in the back seat: Forward-facing car seats are appropriate for older children, typically after they have outgrown rear-facing car seats based on height and weight requirements.

Infants should always ride in a rear-facing car seat until they reach the maximum weight or height limit specified by the car seat manufacturer.

A. The child does not vocally respond to voices: While vocal responsiveness is an important aspect of development, it may vary among infants and is not necessarily indicative of a developmental problem at 4 months.

B. The child never squeals or yells: Squealing and yelling are vocalizations that infants may or may not exhibit at this age, and their absence alone may not necessarily indicate a developmental problem.

C. The child does not babblE. Babbling, which typically begins around 4 to 6 months of age, involves the repetition of consonant-vowel combinations (e.g., "bababa"). The absence of babbling by 4 months may suggest a delay in language development and could be a potential sign of a developmental problem.

D. The child does not say dada or mamA. Infants may begin to associate "dada" or "mama" with specific caregivers, but this typically occurs later, closer to 6 to 9 months of age. The absence of this behavior at 4 months may not necessarily indicate a developmental problem.