Correct Answer: B

Rationale: The best initial action during a tonic-clonic seizure is to place the child on the floor. This action helps prevent injury by providing a safe environment and allows for better management of the seizure episode. Attempting to open the jaw is not recommended as it may cause harm to the child or the nurse. Calling out for assistance is important but should not delay ensuring the child's safety first. Placing a pillow under the child's head is not advisable during a seizure as it can pose a risk of suffocation or choking.

Correct Answer: B

Rationale: The correct answer is B: Signs of child abuse. When a nurse observes large welts and scars on a child, it raises concern for possible child abuse. It is crucial for the nurse to assess further for signs of abuse, document findings, and report appropriately to protect the child. Choice A, history of an injury, is not specific to potential abuse and may not provide insight into the current situation. Choice C, presence of food allergies, is not directly related to the observed welts and scars. Choice D, recent recovery from chickenpox, is also unrelated to the signs of abuse and does not impact the immediate assessment of the child's safety.

Correct Answer: C

Rationale: The correct answer is to measure the dose with a proper measuring device. Using a household spoon can lead to inaccurate dosing, which can be dangerous. Administering the medication with food or only when the child has a high fever are not the essential instructions related to the safe and effective administration of acetaminophen.

Correct Answer: D

Rationale: The correct answer is D. Infants have a higher extracellular fluid requirement per unit of body weight, making them more susceptible to dehydration and electrolyte imbalances during illnesses such as diarrhea. Choice A is incorrect because cellular metabolism being unstable is not the primary explanation for the symptoms described. Choice B is incorrect as the proportion of water in the body alone does not fully explain the increased risk of dehydration in infants. Choice C is incorrect because while renal function is immature in children, it is not the most relevant factor in this scenario compared to the increased fluid requirements.

Correct Answer: D

Rationale: Toddlers striving for autonomy need to develop internal controls to foster their independence. Teaching the child to share (Choice A) focuses more on social skills rather than autonomy. Helping the child learn society's roles (Choice B) is important but not directly related to enhancing autonomy. Teaching the child to accept external limits (Choice C) is contrary to promoting autonomy as it emphasizes conformity to external rules rather than internal self-regulation.