Who is known as the father of blood group studies?

Options

A. H F nuttal
B. Francis Galton
C. Achibald Garrod
D. Landsteiner

Answer

**Step-by-Step Solution:**

1. **Identify the Question**: The question asks for the individual known as the "father of blood group studies."

2. **Recall Relevant Information**: The study of blood groups is primarily associated with the discovery of the ABO blood group system.

3. **Identify the Scientist**: The scientist credited with discovering the ABO blood group system is Karl Landsteiner.

4. **Clarify Contributions**: While Landsteiner discovered the ABO blood groups, it is important to note that the Rh factor (positive and negative blood types) was discovered by his students.

5. **Conclusion**: Therefore, Karl Landsteiner is recognized as the father of blood group studies.

6. **Final Answer**: The correct answer is Karl Landsteiner.

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