12. Which statement explains the central idea of the passage?
Answer: B
People may experience health benefits from drinking hard water because it contains magnesium.
The passage highlights the health benefits associated with drinking hard water, specifically noting that it contains essential minerals like calcium and magnesium. These minerals play significant roles in various bodily functions, suggesting that their presence in drinking water contributes positively to health.
A) People should consume as much magnesium as possible to ensure good cardiovascular health.
This statement is not accurate in the context of the passage. While magnesium is important for cardiovascular health, the passage focuses specifically on the health benefits of drinking hard water rather than advocating for excessive magnesium consumption in general.
B) People may experience health benefits from drinking hard water because it contains magnesium.
This statement accurately reflects the central idea of the passage. It emphasizes the documented health benefits of hard water, which contains magnesium, and suggests that the presence of this mineral is beneficial for health, particularly concerning cardiovascular functions.
C) People who live in rural environments are healthier than people who live in urban environments.
This statement is not addressed in the passage. The focus is on the properties of hard water and its minerals, rather than making comparisons between the health of individuals in rural versus urban settings.
D) People should stop the practice of softening water because it removes minerals that are necessary for good health.
While the passage mentions the practice of softening water, it does not explicitly argue that people should stop doing so. Instead, it highlights the potential health risks associated with the absence of minerals like calcium and magnesium in drinking water, without directly advocating for the cessation of water softening practices.
Conclusion
The correct answer, B, effectively captures the essence of the passage by linking the consumption of hard water and its mineral content to potential health benefits. The other options either misinterpret the information presented or stray from the primary focus of the text, which centers on the health implications of drinking hard water.