Correct Answer: A

Rationale: The correct answer is to establish consistent boundaries for the toddler. This approach helps toddlers understand expectations and promotes consistent behavior. Placing the toddler alone or using food rewards may not effectively teach discipline and could be inappropriate. Informing the toddler about feelings when misbehaving may not be developmentally appropriate for a toddler to understand the consequences of their actions.

Correct Answer: C

Rationale: The correct answer is C, 'Proximate cause.' Proximate cause establishes the link between the harm suffered and the negligent actions performed by the nurse. In a malpractice lawsuit, proving proximate cause is essential to demonstrate that the nurse's actions directly led to the harm experienced by the client. Choice A, 'Evidence,' is incorrect as evidence is the information presented to support or refute a claim, not specifically the link between harm and negligence. Choice B, 'Tort discovery,' is incorrect as it does not specifically refer to establishing the link between harm and negligence. Choice D, 'Common cause,' is incorrect as it does not capture the legal concept of proximate cause in establishing liability in malpractice cases.

Correct Answer: A

Rationale: The correct instruction is to use tracheostomy covers when outdoors. Tracheostomy covers serve to protect the airway from environmental contaminants, reducing the risk of infection. Choice B is incorrect because hydrogen peroxide can be irritating to the skin and is not recommended for cleaning the tracheostomy site. Choice C is incorrect as tracheostomy tubes should not be routinely changed weekly unless there is a specific medical indication. Changing it without a need can introduce infection or damage the stoma. Choice D is incorrect as applying ointment around the tracheostomy site can lead to occlusion of the stoma and interfere with breathing.

Correct Answer: A

Rationale: Helping the clients increase their self-motivation is crucial for long-term weight loss success. By empowering clients to find their internal drive to make healthy choices, they are more likely to stay committed to their goals. Choice B is incorrect because recommending a strict diet plan immediately may not consider the clients' individual preferences and needs, leading to potential disengagement. Choice C is incorrect as focusing solely on exercise without addressing dietary changes does not provide a comprehensive approach to weight loss. Choice D is incorrect because setting only short-term goals may not foster sustained progress towards achieving a healthier weight.

Correct Answer: C

Rationale: A hematocrit (HCT) of 60 indicates severe dehydration, a critical condition in diabetic ketoacidosis that requires immediate intervention. Severe dehydration can lead to hypovolemic shock and organ failure. While a low pH below 7.3 is indicative of acidosis, it may not require immediate action compared to severe dehydration. A potassium level of 5.0 is within the normal range and not a critical finding in this scenario. PaO2 of 79% reflects oxygenation status, which is important but not the most critical finding requiring immediate action in diabetic ketoacidosis.