The cancerous cells which have the ability to proliferate and cause cancer in new locations of the body are known as

Options

A. Benign
B. Lymphoma
C. Leukemia
D. Malignant

Answer

**Step-by-Step Solution:**

1. **Understanding Cancer Cells**: Cancer cells are characterized by abnormal growth and division. They can form masses or lumps in the body.

2. **Types of Cancer Cells**: Cancer cells can be classified into two main types based on their behavior:
- **Benign Cancer Cells**: These cells grow in a localized area and do not spread to other parts of the body. They are generally considered non-cancerous and can often be removed surgically without much risk.
- **Malignant Cancer Cells**: These cells have the ability to invade surrounding tissues and spread to other parts of the body, causing secondary tumors. They are aggressive and can lead to more severe health complications.

3. **Analyzing the Options**:
- **Option 1: Benign**: Incorrect, as benign cells do not spread.
- **Option 2: Lymphoma**: This is a type of cancer that affects the lymphatic system but does not specifically refer to the ability to spread.
- **Option 3: Leukemia**: This is a cancer of the blood cells and does not refer to the spreading ability of cancer cells in general.
- **Option 4: Malignant**: Correct, as malignant cells are defined by their ability to proliferate and metastasize (spread) to new locations in the body.

4. **Conclusion**: The cancerous cells that have the ability to proliferate and cause cancer in new locations of the body are known as **malignant cancer cells**.

**Final Answer**: Malignant

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