…….... cells help in blood clotting.

Explanation

**Step-by-Step Solution:**

1. **Identify the Types of Blood Cells**: There are three main types of cells in the blood: Red Blood Cells (RBCs), White Blood Cells (WBCs), and Platelets.

2. **Understand the Functions of Each Cell Type**:
- **RBCs**: Their primary function is to transport oxygen and carbon dioxide throughout the body.
- **WBCs**: These cells are crucial for the immune system, as they help fight against infections.
- **Platelets**: These are the cells that play a significant role in blood clotting.
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