A nurse is caring for a 16-year-old adolescent who requires consent for treatment of an STI.
Which of the following individuals can give informed consent?

Choice A rationale

Stridor is a high-pitched sound often caused by airway obstruction or inflammation. It is a hallmark of acute laryngotracheobronchitis. The narrowed airways produce turbulent airflow, leading to this characteristic noise during inspiration.

Choice B rationale

The cough type, while clinically relevant, lacks specificity. It does not help differentiate between laryngotracheobronchitis and pneumonia since both conditions may present with cough.

Choice C rationale

Fever commonly accompanies infection but does not distinguish laryngotracheobronchitis from pneumonia. Both conditions are often associated with elevated body temperature due to immune response.

Choice D rationale

Irritability may occur due to hypoxia or fever in various respiratory conditions. However, it is nonspecific and does not directly confirm laryngotracheobronchitis or pneumonia.

Choice A rationale

Turning two pages at a time reflects fine motor control development seen in younger toddlers. At 15 months, most toddlers refine coordination, progressing to turning single pages. Double-page turning is less precise, often due to immature grasp and pinch abilities. Fine motor milestones evolve with age, allowing toddlers to handle books more adeptly. This finding contrasts expected skills of a 15-month-old toddler, who typically exhibits improved single-page manipulation.

Choice B rationale

Throwing a ball overhead without falling signifies advanced gross motor skills uncommon at 15 months. Toddlers this age generally develop basic motor coordination like walking and controlled ball rolling rather than overhead throwing. Overhead throwing requires integrated balance and muscle strength, milestones reached closer to 18-24 months. A 15-month-old’s motor development includes walking without assistance and simple gross motor activities like kicking.

Choice C rationale

Drinking independently from a cup indicates motor and cognitive skills typical of a 15-month-old toddler. At this age, toddlers develop hand-eye coordination and the ability to grasp and tilt cups correctly. Fine motor milestones include learning to feed themselves and achieve independence in activities like drinking. Drinking independently reflects self-sufficiency and developmental progress expected in toddlers at 15 months.

Choice D rationale

Referring to themselves by their first name reflects cognitive and language skills progressing beyond 15 months. Toddlers this age typically use single words or gestures to communicate needs. Self-identification with their name becomes evident later, around 18-24 months, as language skills improve. A 15-month-old toddler may recognize their name but is unlikely to articulate it spontaneously.