Correct Answer: B

Rationale: A beach ball is appropriate for an 18-month-old as it is safe and can help with motor skills development. Choice A, storybooks, may not be suitable for this age group due to limited attention span. Choice C involves interaction with other children which may not always be feasible in a healthcare setting. Choice D, pickup sticks, poses a choking hazard and is not suitable for toddlers.

Correct Answer: B

Rationale: The correct answer is B because encrypting personal health information when sending emails is a crucial aspect of maintaining client confidentiality. This process ensures that sensitive information is protected during electronic communication. Choice A is incorrect as sharing passwords violates client confidentiality. Choice C is incorrect as posting client's vital signs breaches confidentiality. Choice D is incorrect as discarding personal health information in the trash can lead to unauthorized access.

Correct Answer: D

Rationale: Type 1 diabetes is characterized by the inability of the beta cells in the pancreas to secrete insulin. Choice A is correct because it highlights the role of beta cells. Choice B is accurate as the endocrine function of the pancreas includes insulin secretion. Choice C is true as without insulin, ketoacidosis can develop. Choice D is incorrect as the exocrine function of the pancreas involves secreting digestive enzymes, not estrogen.

Correct Answer: D

Rationale: Insulin forces potassium out of the plasma and into the cells, which can cause hypokalemia. This is because insulin enhances the activity of the sodium-potassium pump in cell membranes, promoting the movement of potassium from the extracellular fluid into the cells. Choices A, B, and C are incorrect as insulin does not directly influence the movement of calcium, magnesium, or phosphorus in the same manner as it does with potassium.

Correct Answer: A

Rationale: An episiotomy is a surgical incision of the perineum to prevent tearing during delivery. This procedure is performed to widen the vaginal opening and facilitate childbirth. Choice B is incorrect as it describes the expulsion of the mucus plug, not an episiotomy. Choice C is incorrect as it refers to a different procedure, a cesarean section, where the baby is delivered through an incision in the abdomen. Choice D is incorrect as it pertains to cutting the umbilical cord, which is not related to an episiotomy.