Read the passage and answer the following questions:
Metals are often associated with industrial use and construction, but many of them play a vital role in the human body and are essential for maintaining good health. These bio essential metals, present in small quantities, are involved in crucial physiological functions such as oxygen transport, enzyme activity, and immune response, Iron, for instance, is a key component of hemoglobin, the protein in red blood cells that carries oxygen throughout the body. A deficiency in iron can lead to anemia, fatigue, and reduced cognitive function. Zinc supports the immune system, aids in wound healing, and is necessary for proper growth and development, especially in children. Calcium, though more commonly known as a mineral, is technically a metal. It is essential for strong bones and teeth, and also plays a role in muscle contraction and nerve transmission. Similarly, magnesium contributes to over 300 enzyme reactions in the body and supports muscle and nerve function. Copper aids in the formation of red blood cells and supports cardiovascular health, while selenium, a trace metal, functions as an antioxidant, protecting cells from damage. However, it is important to note that while these metals are beneficial in small amounts, excessive intake either through supplements or environmental exposure can be toxic. Maintaining a balanced diet rich in fruits, vegetables, whole grains, and lean proteins typically provides sufficient amounts of these essential metals. Understanding their role highlights the intricate connection between nutrition, chemistry, and overall health. Choose the correct negative interrogative form of the following sentence:
Which idiom best describes the importance of consuming essential metals in the right amounts, as highlighted in the passage?
Show answer & explanation
Correct answer: C
Explanation
The passage explains that while bio essential metals are vital for health in 'small quantities,' excessive intake 'can be toxic'. This highlights the concept that even beneficial things can be harmful in excess, which is the meaning of the idiom 'too much of a good thing'.