Correct Answer: C

Rationale: Delegation by succession is the act of assigning a specific task or responsibility to someone temporarily while the usual person in charge is absent or unavailable. In this scenario, the unit manager is delegating her responsibilities to her assistant unit manager while she is on leave, indicating a temporary transfer of duties. This allows for a smooth continuity of operations within the unit during the manager's absence.

Correct Answer: D

Rationale: Insulinoma is a rare neuroendocrine tumor that arises from pancreatic beta cells, leading to excessive production and secretion of insulin. The symptoms described in the patient, such as weight loss, fatigue, nausea, vomiting, abdominal pain, hypoglycemia, and elevated insulin levels, are characteristic of insulinoma.

Correct Answer: B

Rationale: The symptoms described such as memory loss, impaired judgment, personality changes, difficulty with language, motor function, and coordination all point towards Alzheimer's disease. Alzheimer's is a progressive neurodegenerative disease that primarily affects memory and cognitive functions. Over time, it leads to severe impairment in daily activities and overall functioning. While Parkinson's disease, Huntington's disease, and ALS can also present with neurological symptoms, the combination of gradual-onset memory loss, cognitive decline, and functional impairments seen in this scenario is most characteristic of Alzheimer's disease.

Correct Answer: D

Rationale: Scabies is caused by an infestation of the microscopic mite Sarcoptes scabiei. This parasitic mite burrows into the upper layer of the skin, where it lays eggs and causes intense itching and skin irritation. The transmission of scabies usually occurs through close and prolonged skin-to-skin contact with an infested person. Unlike viruses, bacteria, and fungi, which are microorganisms that can also cause skin infections, scabies specifically refers to an infestation by a parasitic mite.

Correct Answer: A

Rationale: The best thing to do next is to turn off the fan immediately. The fact that the electric fan is stopping every now and then and sparking at intervals indicates a potential electrical issue or malfunction. This situation poses a safety hazard as it increases the risk of an electrical fire or damage to the fan. Turning off the fan immediately will help prevent any further damage or potential danger. After turning off the fan, it would be advisable to call for maintenance to inspect and repair the fan to ensure it is safe to use again.