Assertion: Metastatic cancers are more serious than benign tumors.
Reason: These spread from an organ to other body organs and there is increased interference with metabolic functions.

Options

A. If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
B. If both Assertion and Reason are true and the Reason is not the correct explanation of the Assertion.
C. If Assertion is true but the Reason is false.
D. If both Assertion and Reason are false.

Answer

**Step-by-Step Solution:**

1. **Understanding the Assertion:**
- The assertion states that metastatic cancers are more serious than benign tumors.
- Metastatic cancers refer to malignant tumors that have the ability to spread to other parts of the body, while benign tumors do not spread.

2. **Defining Tumors:**
- A tumor is an abnormal growth of cells, which can be either benign (non-cancerous) or malignant (cancerous).
- Benign tumors grow slowly and do not invade surrounding tissues or spread to other organs, while malignant tumors grow rapidly and can metastasize.

3. **Understanding Metastasis:**
- Metastasis is the process by which cancer cells spread from the original (primary) site to other parts of the body.
- This spreading occurs through the bloodstream or lymphatic system, leading to the formation of secondary tumors in other organs.

4. **Analyzing the Reason:**
- The reason states that metastatic cancers spread from one organ to other body organs and cause increased interference with metabolic functions.
- This is true, as malignant tumors can disrupt normal body functions by invading tissues and affecting metabolic processes.

5. **Conclusion:**
- Both the assertion and the reason are true. The reason correctly explains why metastatic cancers are more serious than benign tumors due to their ability to spread and interfere with metabolic functions.
- Therefore, the correct answer is that both the assertion and reason are true, and the reason is the correct explanation of the assertion.

**Final Answer:**
Both assertion and reason are true, and the reason is the correct explanation of the assertion.

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