Correct Answer: D

Rationale: The Resiliency model of family stress, adjustment, and adaptation is the appropriate theory in this scenario. This model focuses on identifying risks and protective factors that help families achieve positive outcomes despite challenges. Duvall's developmental theory primarily focuses on family life cycle stages, Friedman's structural functional theory emphasizes the interdependence of family members, and Von Bertalanffy's general system theory applied to families looks at the family as a dynamic system. These theories do not specifically address the concept of resilience and adaptation in the face of stressors like homelessness.

Correct Answer: C

Rationale: The correct answer is C. Needing assistance to climb stairs is considered expected behavior for an 18-month-old toddler. At this age, children are still developing their gross motor skills, coordination, and balance, which can vary in proficiency. It is common for toddlers to be able to crawl upstairs before mastering the skill of climbing stairs upright. Options A, B, and D are incorrect because at 18 months, it is normal for children to require help and practice with climbing stairs and does not necessarily point to any specific medical conditions or developmental issues.

Correct Answer: D

Rationale: For a child with muscular dystrophy who fell out of bed, it is important to prevent further injuries. Using bed side rails when a caregiver is not present can help provide a safety measure and prevent falls. While continuous caregiver presence (choice B) may be ideal, it may not always be feasible. Recommending raising the bed's side rails throughout the day and night (choice A) may limit the child's mobility unnecessarily. Encouraging the use of a loose restraint (choice C) can be dangerous and may increase the risk of injury in case of a fall.

Correct Answer: D

Rationale: Weight gain is the expected finding in a child with hypothyroidism. Hypothyroidism leads to a slowed metabolism, which can result in weight gain. Choices A, B, and C are not typical findings in hypothyroidism. Nervousness and heat intolerance are more commonly associated with hyperthyroidism, where the body is in a state of overactivity. Smooth velvety skin is not a characteristic sign of hypothyroidism.

Correct Answer: C

Rationale: The correct answer is to place a tracheotomy set at the bedside. Acute laryngotracheobronchitis can cause airway obstruction, which may require an emergency tracheotomy. Having the tracheotomy set readily available ensures quick access in case of respiratory distress. Padding the side rails of the crib, arranging for a quiet, cool room, and obtaining a recliner for a parent are important aspects of care but are not the priority when managing a potentially life-threatening airway emergency.