Correct Answer: A

Rationale: Varicella (chickenpox) is an airborne infectious disease, requiring isolation to prevent the spread of the virus.

Correct Answer: C

Rationale: Pulling to a standing position typically occurs between 11 to 12 months, marking the progression towards walking.

Correct Answer: D

Rationale: In newborns, intramuscular vitamin K is traditionally administered into the vastus lateralis muscle. This site is preferred due to its large muscle mass and accessibility. The dorsogluteal site is not recommended for newborns due to the risk of injury to the sciatic nerve. The deltoid site is also not recommended for newborns. The rectus femoris muscle is not commonly used for intramuscular injections in newborns.

Correct Answer: B

Rationale: Administering antibiotics on schedule is crucial in treating a UTI effectively and preventing complications. Antibiotics help to eliminate the infection-causing bacteria from the urinary tract. While maintaining adequate nutrition and hydration are important aspects of care, the priority in a UTI is to target the infection with antibiotics. Preventing enuresis (bedwetting) is not directly related to the treatment of the infection. Fluid restriction is not recommended in the management of a UTI; in fact, encouraging adequate fluid intake helps flush out bacteria from the urinary tract.

Correct Answer: A

Rationale: The correct answer is A: 'Industry vs. inferiority.' According to Erikson's theory, school-age children (approximately 6-12 years old) are in the stage of industry vs. inferiority. In this stage, children focus on developing a sense of competence and productivity. Choice B, 'Autonomy vs. shame and doubt,' is incorrect as it refers to the stage that occurs during early childhood (1-3 years old). Choice C, 'Identity vs. role diffusion,' pertains to adolescence (12-18 years old). Choice D, 'Trust vs. mistrust,' is related to the stage of infancy (0-1 year old). Therefore, option A is the most appropriate stage for school-age children in Erikson's theory.