Correct Answer: D

Rationale: The correct answer is D. A total weight gain of 15 lb in one year for a 2-year-old is excessive and may indicate an underlying issue such as a metabolic disorder or overfeeding. This rapid weight gain can put the child at risk for health problems. Choices A, B, and C are not typically concerning findings in a 2-year-old. A prominent abdomen can be normal at this age due to a toddler's slightly protruding belly, a forward curve of the spine at the sacral area is a typical finding in young children, and an increase in height of 5 inches in a year is within the expected range of growth for a 2-year-old.

Correct Answer: D

Rationale: After ensuring the child's immediate survival needs are met with CPR, contacting poison control is critical to receive specific guidance on how to proceed with treatment. Other actions may be necessary depending on the situation but should follow contacting poison control.

Correct Answer: D

Rationale: The correct answer is D: Growth restriction in weight, length, and chest and head circumference. Infants born to mothers who smoke during pregnancy exhibit growth failure in weight, length, chest, and head circumference. This growth failure is directly related to the number of cigarettes smoked by the mother. Choices A, B, and C are incorrect because infants exposed to maternal smoking do not tend to be large for gestational age, experience growth restriction in weight only, or be preterm but size appropriate for gestational age.

Correct Answer: C

Rationale: The correct answer is C: RSV, influenza, and adenovirus. The CDC recommends respiratory hygiene and etiquette to prevent the transmission of respiratory syncytial virus (RSV), influenza, adenovirus, and other droplet-transmitted unknown viruses. Choices A, B, and D are incorrect because HBV, Hib, pertussis, HSV, and varicella are not typically transmitted via droplets but through other modes of transmission.

Correct Answer: B

Rationale: Introducing new foods gradually and offering a variety of options is a suitable nutritional goal for preschool-aged children as it helps in providing essential nutrients and expanding their palate. Choice A is incorrect as reducing messiness and spills is more related to behavior than nutrition. Choice C is incorrect as forcing a child to finish all the food on the plate may override their natural hunger and fullness cues. Choice D is incorrect as allowing a child to eat only preferred foods may lead to an imbalanced diet lacking in essential nutrients.