What statement made by a parent indicates correct understanding of infant feeding?

The correct answer is D. 2 to 3 months.

Choice A rationale:

The posterior fontanelle does not close within 3 to 6 months of birth. This timeframe is too long for the typical closure of the posterior fontanelle.

Choice B rationale:

Similarly, the posterior fontanelle does not close within 6 to 9 months of birth. This period is beyond the usual closure time for the posterior fontanelle.

Choice C rationale:

The posterior fontanelle does not close within 9 to 12 months of birth. This timeframe is significantly longer than the typical closure period for the posterior fontanelle.

Choice D rationale:

The posterior fontanelle typically closes within 2 to 3 months of birth. This is the correct timeframe for the closure of the posterior fontanelle.

Choice A rationale:

The statement, "The baby really likes little pieces of chocolate," is not an indication of correct understanding of infant feeding. Introducing chocolate to an infant's diet is not recommended, as it can pose a choking hazard and is not a suitable first food.

Choice B rationale:

The statement, "Give the baby new foods before he takes his bottle," does not indicate a correct understanding of infant feeding. It's generally recommended to introduce solid foods to infants after they have started with breast milk or formula, not before.

Choice C rationale:

The statement, "I've been mixing rice cereal and formula in the baby's bottle," indicates a correct understanding of infant feeding. This practice is often recommended as a way to transition infants to solid foods gradually, and it can help with feeding and digestion.

Choice D rationale:

The statement, "I switched the baby to low-fat milk at 9 months," is not a correct understanding of infant feeding. Infants should not be given low-fat milk until after the age of 1, as they need the higher fat content in whole milk for proper growth and development.