Patient, nervous

Correct Answer: B

Rationale: The correct answer is B because watching comedy shows can help alleviate nervousness and anxiety in patients by promoting laughter, which releases endorphins and reduces stress. It serves as a distraction and provides a positive emotional outlet. Choice A, performing a DBE (Double-balloon enteroscopy), is not relevant to addressing the patient's nervousness. Choices C and D are incomplete and do not offer any viable solution to the patient's condition.

Correct Answer: B

Rationale: The correct answer is B. Core temperature is regulated by the body's internal mechanisms to maintain homeostasis. It does not change significantly under normal conditions. A, C, and D are incorrect because core temperature is not directly influenced by environmental changes, night-time, or unspecified factors.

Correct Answer: A

Rationale: The correct answer is A: Held on the strong side. This is because when using a cane for walking support, it should be held on the side opposite to the weaker or injured leg. This helps to provide stability and balance by shifting weight away from the affected side. Holding the cane on the strong side also allows for better control and support while walking. Choice B (Held on the weak side) is incorrect as it would not provide the necessary support and balance needed for walking with a cane. Choices C and D are not provided, so they are automatically incorrect.

Correct Answer: B

Rationale: The correct answer is B: Increased temperature. When a person is stressed, their body releases stress hormones like adrenaline, which can lead to an increase in body temperature. This physiological response is known as the "fight or flight" response, where the body prepares to respond to a perceived threat. Increased temperature helps increase blood flow and oxygen to muscles to facilitate a quick response. Choice A (Decreased temperature) is incorrect because stress typically leads to an increase in temperature due to the activation of the body's stress response system. Choices C and D are incomplete and do not provide any information related to the physiological response to stress.

Correct Answer: B

Rationale: The correct answer is B: Sing happy birthday first. This step ensures that you wash your hands for at least 20 seconds, which is recommended by health experts to effectively remove germs. Singing happy birthday twice helps track the time and ensures thorough handwashing. Choice A is incorrect as opening the faucet first does not address the crucial 20-second handwashing duration. Choices C and D are incomplete and do not provide any relevant information on proper handwashing technique.