Correct Answer: A

Rationale: The correct response is A. Solid foods, especially iron-fortified cereals, are introduced to meet the infant's increased nutritional needs, including iron, which breast milk alone may not provide adequately. Choice B is incorrect because the extrusion reflex is related to the tongue-thrust reflex, not the nutritional needs of the infant. Choice C is incorrect as breastfeeding does not become painful when the infant gets more teeth, and it is not a reason for introducing solid foods. Choice D is incorrect as the infant's interest in trying new skills is not a primary reason for introducing solid foods at this age.

Correct Answer: A

Rationale: The correct answer is A: Respiratory syncytial virus (RSV). RSV is the most common cause of bronchiolitis, especially in infants. Bronchiolitis is characterized by inflammation of the small airways in the lungs. Choice B, Haemophilus influenzae, is a bacterium that can cause respiratory infections but is not the primary cause of bronchiolitis. Choice C, Parainfluenza, is a common viral infection that can cause croup and other respiratory illnesses but is not the main cause of bronchiolitis. Choice D, Rotavirus, is a virus that primarily affects the gastrointestinal system, causing diarrhea and vomiting, and is not associated with bronchiolitis.

Correct Answer: B

Rationale: Cultural humility, sensitivity, and competency are key components in providing culturally competent care in healthcare encounters.

Correct Answer: B

Rationale: To maintain the skin integrity of a preterm infant born at 30 weeks, the nurse should bathe the infant with sterile water no more than two or three times per week. The eyes, oral and diaper areas, and pressure points should be cleansed daily. It is essential to avoid using alkaline-based soaps as they might destroy the 'acid mantle' of the skin. Additionally, cleansing with mild solutions and rinsing thoroughly with plain water is recommended to prevent skin irritation and maintain skin integrity. Therefore, options A, C, and D are incorrect as they do not align with the best practices for preterm infant skin care.

Correct Answer: C

Rationale: The correct answer is C, parallel play. Parallel play is observed when children play alongside each other but do not directly interact. In this scenario, each child is engaged in their own activity without engaging or influencing each other's play, which characterizes parallel play. Cooperative play (choice A) involves children playing together towards a common goal, which is not evident in the given situation. Solitary play (choice B) is when a child plays alone, unrelated to the presence of others. Associative play (choice D) involves more interaction and sharing of toys between children, which is not happening in the described play scenario.