Correct Answer: C

Rationale: Cryptosporidium parvum is a protozoan parasite that commonly causes waterborne illness characterized by watery diarrhea, abdominal cramps, and nausea. This parasite is often transmitted through contaminated water sources such as streams or lakes. Laboratory tests identifying oocysts in the stool sample are indicative of Cryptosporidium infection. Giardia lamblia can also cause similar symptoms, but the presence of oocysts points more towards Cryptosporidium in this case. Entamoeba histolytica causes amoebic dysentery with bloody diarrhea and is usually associated with fecal-oral transmission through contaminated food or water. Cyclospora cayetanensis typically causes prolonged watery diarrhea and is associated with the ingestion of contaminated food or water.

Correct Answer: B

Rationale: The nurse's best response when a patient expresses frustration with the healthcare system's inefficiencies is to listen actively to the patient's concerns, acknowledge the challenges they are facing, and offer support. It is important for the nurse to validate the patient's feelings and demonstrate empathy, rather than dismissing or ignoring their frustrations. By offering support and showing understanding, the nurse can help the patient feel heard and valued, which is an essential aspect of providing patient-centered care. This approach can also help to strengthen the nurse-patient relationship and build trust, ultimately leading to better outcomes for the patient's overall healthcare experience.

Correct Answer: C

Rationale: The demographic profile of a population encompasses various aspects, including size, distribution, composition, and change over time.

Correct Answer: B

Rationale: When a patient describes their pain as a 5 on the pain assessment scale, it indicates severe pain and the need for a strong pain medication. Morphine Sulphate is a potent opioid analgesic that is commonly used to manage severe pain, such as in cases where the pain is rated as 5. Meperidine HCl (Demerol) is another opioid analgesic, but it is not as commonly used due to its side effect profile and potential for toxicity. Fentanyl (Duragesic) is also a potent opioid analgesic that can be used for severe pain, but morphine is often preferred in this situation. Acetaminophen (Tylenol) is a milder pain reliever and is not typically sufficient for pain described at a level of 5 on the pain scale.

Correct Answer: A

Rationale: Flexibility is the most important criterion in budgeting because it allows for adjustments to be made as circumstances change. Budgeting is a dynamic process, and having a flexible budget enables organizations or individuals to adapt to unexpected changes in income or expenses. This helps in ensuring that resources are allocated efficiently and effectively to meet the overall financial goals. Consistency, standardization, and cost-effectiveness are also important considerations in budgeting, but flexibility is key to successfully managing financial resources in a changing environment.