Correct Answer: B

Rationale: According to Erikson's theory of psychosocial development, the primary task for an 8-year-old child aligns with the stage of industry versus inferiority. This stage focuses on mastering useful skills and tools of the culture, emphasizing competence in various areas. Option A, 'Developing a sense of control over self and body functions,' is more characteristic of the toddler stage, emphasizing autonomy and self-regulation. Option C, 'Gaining independence from parents,' is more relevant to the adolescent stage, where identity development and autonomy become crucial. Option D, 'Developing a sense of trust in the world,' pertains to the infant stage, highlighting the importance of forming secure attachments. Therefore, the correct answer is B as it directly corresponds to the developmental tasks associated with an 8-year-old child according to Erikson's theory.

Correct Answer: C

Rationale: Medication bound to protein leads to less availability to produce desired medicinal effects because only unbound drugs can interact with active receptor sites. If a drug is bound to protein, it cannot bind with a receptor site, reducing its effectiveness. Choice A is incorrect because binding to protein reduces drug availability. Choice B is incorrect because distribution to receptor sites is ineffective if the drug is bound to protein. Choice D is incorrect because metabolism does not occur until the drug is removed from the protein molecule by the liver, allowing the protein to return to circulation.

Correct Answer: B

Rationale: Signs of physical readiness for toilet training include the child's ability to remove his or her own clothing. This ability indicates the child has developed the necessary fine motor skills to manage clothing during toilet training. The other choices are incorrect because temper tantrums, walking for a specific period, and using utensils are not indicators of physical readiness for toilet training.

Correct Answer: C

Rationale: Generally, body piercing is harmless if the procedure is performed under sterile conditions by a qualified person. Some complications that may occur include bleeding, infection, keloid formation, and the development of allergies to metal. It is essential to clean the area at least twice a day (more often for a tongue piercing) to prevent infection. HIV and hepatitis B infections are not typically associated with body piercing; however, they are a possibility with tattooing. Choice A is incorrect because infection does not always occur when body piercing is done. Choice B is not the best answer as hepatitis B is not commonly associated with body piercing. Choice D is incorrect because the risk of contracting HIV is not a significant concern with body piercing if performed under sterile conditions.

Correct Answer: A

Rationale: School-age children are capable of taking responsibility for their own dental hygiene. Establishing good oral health habits during childhood can lead to a lifetime of cavity prevention. The nurse advises the parents that their children should brush with fluoride toothpaste and floss between their teeth after meals and before bedtime. This routine helps maintain good oral health and teaches children the importance of dental care. Choice A is the correct answer as it emphasizes both brushing and flossing after meals and at bedtime, which are crucial for effective dental care. Choices B, C, and D are incorrect as they do not stress the significance of both brushing and flossing after meals, which is essential for proper oral hygiene.