Heavy metal water pollutants are dangerous to human because
human body cannot excrete them.
human body can excrete them.
these metals can damage kidney and liver.
Which of the following is/are the correct option(s)?

Options

A. I,II and II are correct
B. I and II are correct
C. II and III are incorrect
D. I and III are correct

Answer

To solve the question regarding heavy metal water pollutants and their dangers to humans, we will analyze each option provided.

**Step 1: Analyze the first option - "human body cannot excrete them."**
- Heavy metals such as lead, mercury, and cadmium accumulate in the body and are not easily excreted. The human body lacks efficient mechanisms to eliminate these metals, leading to their buildup over time. Therefore, this statement is correct.

**Step 2: Analyze the second option - "human body can excrete them."**
- This statement is incorrect. The human body does not have effective means to excrete heavy metals. Instead, they tend to accumulate in tissues, causing toxicity. Thus, this option is false.

**Step 3: Analyze the third option - "these metals can damage kidney and liver."**
- Heavy metals are known to be toxic and can cause significant damage to vital organs, including the kidneys and liver. This statement is true as exposure to heavy metals can lead to serious health issues, including organ failure. Therefore, this statement is correct.

**Conclusion:**
Based on the analysis:
- The first option is correct: "human body cannot excrete them."
- The second option is incorrect: "human body can excrete them."
- The third option is correct: "these metals can damage kidney and liver."

Thus, the correct options are the first and third statements.

**Final Answer:**
The correct options are:
1. Human body cannot excrete them.
3. These metals can damage kidney and liver.

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