Marrow cavity of the bone is lined by .......

Explanation

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks what lines the marrow cavity of the bone. The marrow cavity is a space within the bone that contains bone marrow.

2. **Identifying the Marrow Cavity**: The marrow cavity is located in the shaft of long bones. It is important to note that this cavity is filled with bone marrow, which is responsible for producing blood cells.

3. **Analyzing the Options**:
- **Option 1: Andosteum**: This term refers to the inner lining of bones. Since the marrow cavity is lined by a layer that is internal to the bone, this option seems plausible.
...