Study of cancer is called

Options

A. Serology
B. Oncology
C. Histology
D. Carcinology

Answer

To determine the correct answer to the question "Study of cancer is called," we can analyze the options provided:

1. **Serology**: This is the scientific study of serum and other body fluids. It does not pertain to cancer specifically.

2. **Oncology**: This is the branch of medicine that focuses on the prevention, diagnosis, and treatment of cancer. This directly relates to the study of cancer.

3. **Histology**: This is the study of the microscopic structure of tissues. While histology can be used in cancer research, it is not specifically the study of cancer itself.

4. **Carcinology**: This term refers to a branch of zoology that studies crustaceans, which is unrelated to cancer.

Based on this analysis, the correct answer is **Oncology**.

### Step-by-Step Solution:
1. **Identify the terms**: Look at each option and understand what each term means.
2. **Analyze each option**:
- **Serology**: Study of serum and body fluids.
- **Oncology**: Study of cancer.
- **Histology**: Study of tissues.
- **Carcinology**: Study of crustaceans.
3. **Determine relevance**: Identify which term is specifically related to cancer.
4. **Select the correct answer**: The term that specifically refers to the study of cancer is **Oncology**.

### Final Answer:
The study of cancer is called **Oncology**.