Select the incorrect statement.

Options

A. Benign tumors lack contact inhibition.
B. Monitoring the blood banks reduces the chances of spreading AIDS .
C. Opioids are obtained from poppy plant.
D. CT scanning is commonly used as a diagnostic test for detecting AIDS.

Answer

To solve the question, we need to analyze each of the provided statements and determine which one is incorrect.

### Step-by-Step Solution:

1. **Analyze Statement 1: "Benign Tumors Lack Contact Inhibition."**
- **Explanation:** Benign tumors are non-cancerous growths that do not exhibit contact inhibition, meaning they continue to grow and proliferate even when they come into contact with surrounding cells. This statement is **correct**.

2. **Analyze Statement 2: "Monitoring the Blood Banks Reduces the Chances of Spreading AIDS."**
- **Explanation:** Regular monitoring and testing of blood donations help ensure that infected blood is not given to recipients, thereby reducing the risk of spreading AIDS. This statement is **correct**.

3. **Analyze Statement 3: "Opioids are Obtained from the Poppy Plant."**
- **Explanation:** Opioids, such as morphine and codeine, are indeed derived from the opium poppy plant. This statement is **correct**.

4. **Analyze Statement 4: "CT Scanning is Commonly Used as a Diagnostic Test for Detecting AIDS."**
- **Explanation:** CT scans are imaging tests used to detect various conditions, but they are not used to diagnose AIDS. AIDS is diagnosed through blood tests that check for the presence of HIV. This statement is **incorrect**.

### Conclusion:
The incorrect statement is **Statement 4: "CT Scanning is Commonly Used as a Diagnostic Test for Detecting AIDS."**

### Final Answer:
**Option 4 is the incorrect statement.**

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