Which of the following is not a connective tissue ?

Options

A. Bone
B. Cartilage
C. Blood
D. Muscles

Explanation

To determine which of the following is not a connective tissue, we can follow these steps:

### Step 1: Identify the Types of Tissues
Understand that tissues in animals are classified into four main types: epithelial tissue, connective tissue, muscular tissue, and nervous tissue.

### Step 2: Analyze the Options
Look at the options provided in the question. Common connective tissues include:
- Bone
- Cartilage
- Blood

### Step 3: Classify Each Option
- **Bone**: This is a specialized connective tissue that provides structure and support.
- **Cartilage**: This is also a specialized connective tissue that provides flexibility and support.
- **Blood**: This is classified as a fluid connective tissue, which plays a role in transportation and immune response.

### Step 4: Identify the Odd One Out
Now, consider the remaining option:
- **Muscle**: This is not a connective tissue; it belongs to muscular tissue, which is responsible for movement.

### Conclusion
Based on the analysis, the option that is not a connective tissue is **muscle tissue**.

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