Correct Answer: C

Rationale: In Erikson's theory of psychosocial development, school-age children typically focus on developing a sense of industry. This stage, occurring during middle childhood, involves the desire to feel competent and productive in their skills and abilities. Choices A, B, and D are incorrect because establishing trust in others (A) is related to the first stage of Erikson's theory (trust vs. mistrust) which occurs in infancy, developing a sense of autonomy (B) is linked to the second stage (autonomy vs. shame and doubt) which occurs in early childhood, and establishing a sense of identity (D) is associated with the fifth stage (identity vs. role confusion) which occurs in adolescence.

Correct Answer: D

Rationale: The correct answer is D: 'Shaky feeling and dizziness.' Hypoglycemia in children often presents with symptoms like shakiness, dizziness, sweating, hunger, and irritability. These symptoms occur because the brain and body are deprived of the glucose they need to function properly. Choices A, B, and C are incorrect because lethargy, thirst, nausea, and vomiting are not typically primary manifestations of hypoglycemia in children.

Correct Answer: B

Rationale: Toilet training should begin when the child has sufficient bladder capacity and control, which may be delayed in children who have undergone surgical repairs for conditions like bladder exstrophy. Premature training can lead to frustration and setbacks.

Correct Answer: A

Rationale: Stool pH testing is used to screen for carbohydrate malabsorption. A low pH indicates the presence of unabsorbed carbohydrates, which are fermented by bacteria, leading to acidic stool.

Correct Answer: C

Rationale: Trimethoprim-sulfamethoxazole (Bactrim) can cause side effects like rash, urticaria, and photosensitivity. Parents and the child should be educated on these potential side effects to ensure prompt recognition and management.