Correct Answer: C

Rationale: The correct recommendation for reducing symptoms of gastroesophageal reflux (GER) in infants is to keep the infant upright for 30 minutes after feeding. This position helps prevent the backflow of stomach contents, alleviating symptoms of reflux. Placing the infant in a prone position or providing larger, less frequent feedings may worsen symptoms, while offering only formula thickened with rice cereal is not the first-line intervention for GER.

Correct Answer: A

Rationale: The correct answer is A. Duchenne muscular dystrophy is an X-linked recessive disorder that primarily affects males. It is crucial for the nurse to explain to the parents that this condition follows an inheritance pattern where the gene mutation responsible for the disorder is located on the X chromosome. Males have only one X chromosome, so if they inherit the mutated gene, they will develop the disease. Females, on the other hand, have two X chromosomes, providing a backup copy that can compensate for the mutation. Understanding this inheritance pattern is essential for family planning decisions, as the risk of passing on the disorder to future children can be explained based on this genetic inheritance.

Correct Answer: B

Rationale: The nurse's priority action should be to inspect the child's ears for drainage. This immediate assessment can provide valuable information about the presence of infection or fluid accumulation, which can directly impact the child's hearing. By identifying any signs of drainage, the nurse can promptly address any current issues affecting the child's ear health and hearing abilities.

Correct Answer: B

Rationale: The correct answer is 'B: Opens mouth when food comes her way.' Readiness for solid foods is indicated by the infant showing interest in food and being able to sit up with support. This behavior demonstrates the infant's readiness to start introducing solid foods in their diet.

Correct Answer: A

Rationale: An increase in urine output is a reliable indicator of improving dehydration in a child. It signifies that the kidneys are functioning better, helping to restore fluid balance in the body. Monitoring urine output is crucial in assessing hydration status and response to treatment.