Correct Answer: A

Rationale: Type 1 diabetes typically occurs after pubertal onset. This form of diabetes is most commonly diagnosed in individuals under the age of 30, with a peak incidence in the mid-teens to early 20s. Puberty is a period of hormonal changes and growth, which can trigger the onset of type 1 diabetes due to the stress it places on the body's insulin-producing cells.

Correct Answer: C

Rationale: The primary factor in selecting drugs for the treatment of a lower respiratory infection in Baby John is the sensitivity of the organism causing the infection. The choice of antibiotics should be guided by the susceptibility of the specific pathogen to ensure effective treatment and prevent resistance.

Correct Answer: C

Rationale: Cabbage is an example of a goitrogen. Goitrogens are substances that can interfere with thyroid function by inhibiting the uptake of iodine. Cabbage contains compounds that can have this effect and should be consumed in moderation by individuals with hypothyroidism.

Correct Answer: C

Rationale: Inability to lie supine is a significant indication of lower respiratory infection. This symptom often occurs due to breathing difficulties and discomfort experienced by individuals with lower respiratory infections, such as pneumonia or bronchitis. It can be caused by lung inflammation, consolidation, or fluid buildup in the lungs, making lying flat uncomfortable or difficult. Monitoring a patient's ability to lie flat can provide valuable information about the severity and progression of a lower respiratory infection.

Correct Answer: B

Rationale: In the management of diabetic ketoacidosis (DKA), the initial intravenous (IV) fluid of choice is normal saline infusion. Normal saline helps to correct dehydration and electrolyte imbalances commonly seen in DKA patients. It does not contain glucose to prevent worsening hyperglycemia or ketoacidosis. NPH insulin infusion is not the initial treatment for DKA; it is typically used after fluid resuscitation. Potassium infusion may be required in DKA to address electrolyte imbalances, but normal saline is the priority for fluid resuscitation.