Blood cancer is -

Options

A. leukaemia
B. thrombosis
C. haemphilia
D. hemolysis

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks to identify what blood cancer is from the given options.

2. **Reviewing the Options**: We need to analyze each option provided to determine which one correctly describes blood cancer.

3. **Analyzing Option A - Leukemia**:
- Leukemia is a type of blood cancer.
- It involves the excessive production of white blood cells (WBCs).
- It originates in the bone marrow or blood-making tissues.

4. **Analyzing Option B - Thrombosis**:
- Thrombosis is not a type of cancer; it refers to the formation of blood clots.
- This option does not describe blood cancer.

5. **Analyzing Option C - Hemophilia**:
- Hemophilia is a genetic disorder that affects blood clotting.
- It is not classified as a type of cancer.

6. **Analyzing Option D - Hemolysis**:
- Hemolysis refers to the breakdown of red blood cells.
- This is also not a type of cancer.

7. **Conclusion**: After analyzing all the options, it is clear that the correct answer is Option A - Leukemia, as it is indeed a type of blood cancer.

8. **Final Answer**: Blood cancer is **Leukemia**.

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