Which major category of cancer has abnormality in producing red blood cells and bone marrow? aLeukemia bLymphomas cCarcinoma dSarcomas

Step 1: Understanding the Categories

To solve this question, it's crucial to understand the different categories of cancer listed:

1. Leukemia: This cancer affects blood and bone marrow, leading to the production of abnormal white blood cells.
2. Lymphomas: These cancers originate in the lymphatic system and primarily affect lymphocytes (a type of white blood cell).
3. Carcinoma: This type of cancer originates in epithelial cells, affecting organs and tissues.
4. Sarcomas: These arise from connective tissues such as bone, cartilage, and muscle.

Step 2: Identifying the Correct Answer

Given the description of having abnormalities in producing red blood cells and affecting bone marrow, the most relevant answer is Leukemia.

Step 3: Conclusion

Leukemia is characterized by the uncontrolled growth of abnormal cells in the bone marrow, which affects the production of blood cells, including red blood cells.

Final Answer

The correct answer is a. Leukemia.