Papillary muscle is found in `:-`

Options

A. Heart
B. Liver
C. Kidney
D. Lung

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks where the papillary muscle is found among the given options: heart, liver, kidney, and lung.

2. **Identifying the Location of Papillary Muscles**: Papillary muscles are structures located in the heart. They are attached to the heart's ventricles and are connected to the heart valves via chordae tendineae.

3. **Function of Papillary Muscles**: The primary function of the papillary muscles is to prevent the backflow of blood by keeping the heart valves (specifically the mitral and tricuspid valves) closed during ventricular contraction.

4. **Reviewing the Options**:
- Option 1: Heart - Correct, as papillary muscles are found here.
- Option 2: Liver - Incorrect, as there are no papillary muscles in the liver.
- Option 3: Kidney - Incorrect, as there are no papillary muscles in the kidneys.
- Option 4: Lung - Incorrect, as there are no papillary muscles in the lungs.

5. **Conclusion**: Based on the above analysis, the correct answer is **Option 1: Heart**.