Correct Answer: B

Rationale: Convenience sampling involves selecting participants who are readily available or easy to access. In this scenario, choosing to interview nurses who happen to be in the conference room where the activity is scheduled falls under convenience sampling as they are easily accessible at that moment. While convenience sampling may be convenient, it may introduce bias and may not represent the entire population accurately.

Correct Answer: C

Rationale: Deductive reasoning is a logical process in which conclusions are drawn from a set of premises or given information. In quantitative research, this type of reasoning is commonly used to test hypotheses and make predictions based on theories and existing knowledge. Researchers start with established theories or hypotheses and then collect data to either support or refute them. This structured approach aligns with the principles of deductive reasoning and is a key characteristic of quantitative research methodology.

Correct Answer: B

Rationale: The presence of risk factors indicates an increased likelihood or susceptibility to developing a particular disease. While risk modification and healthy lifestyle choices can help reduce the risk, having these risk factors still increases the overall chances of getting the disease compared to individuals without the same risk factors. It is essential for individuals with risk factors to be proactive in managing their health to mitigate the increased risk.

Correct Answer: C

Rationale: Cryptosporidium parvum is a parasite commonly found in contaminated water sources such as streams or lakes. It causes an infection called cryptosporidiosis, which often presents with symptoms like watery diarrhea, abdominal cramps, and nausea. The oocysts of Cryptosporidium parvum can be identified in stool samples, making it the likely culprit in this scenario. Giardia lamblia, another common waterborne parasite, can also cause similar symptoms but is characterized by trophozoites rather than oocysts in stool samples. Entamoeba histolytica is associated with amoebic dysentery and does not typically present with watery diarrhea. Cyclospora cayetanensis is another parasite causing gastrointestinal symptoms but is not as commonly associated with contaminated water sources as Cryptosporidium parvum.

Correct Answer: D

Rationale: Patient Sonia, who has hypothyroidism, would benefit from treatment with levothyroxine. Levothyroxine is a synthetic form of the thyroid hormone thyroxine (T4) and is commonly prescribed to replace the deficient thyroid hormone in patients with hypothyroidism. It helps restore the thyroid hormone levels in the body, relieving symptoms such as fatigue, weight gain, and cold intolerance that are characteristic of hypothyroidism. Propranolol is a beta-blocker used for conditions like hypertension, anxiety, and migraines; iron pills are used to treat iron deficiency anemia; and iodine supplementation is not typically used in the treatment of hypothyroidism unless it is due to iodine deficiency.