Ends of long bones are covered with

Options

A. Blood cells
B. Ligaments
C. Muscles
D. Cartilage

Answer

### Step-by-Step Solution

1. **Identify the Question**: The question asks what covers the ends of long bones.

2. **Understand the Structure of Long Bones**: Long bones have specific structures, including the diaphysis (shaft) and epiphysis (ends). The ends of long bones are crucial for joint movement and stability.

3. **Consider the Options Provided**: The options given are:
- A) Blood cells
- B) Ligament
- C) Muscles
- D) Cartilage

4. **Analyze Each Option**:
- **A) Blood cells**: Blood cells are not involved in covering bones; they are found within the bone marrow.
- **B) Ligament**: Ligaments connect bones to other bones but do not cover the ends of bones.
- **C) Muscles**: Muscles are attached to bones but do not cover the ends of long bones.
- **D) Cartilage**: Cartilage, specifically hyaline cartilage, is known to cover the ends of long bones, providing a smooth surface for joint movement.

5. **Conclude the Correct Answer**: Based on the analysis, the ends of long bones are covered with hyaline cartilage. Therefore, the correct answer is **D) Cartilage**.