The friction force exerted by a fluid is called _____.

Explanation

The friction force exerted by a fluid is called **drag force**.

### Step-by-Step Solution:

1. **Understanding the Concept of Friction in Fluids**:
- Friction is a force that opposes the motion of an object. In the case of fluids (like air or water), this friction occurs when an object moves through the fluid.

2. **Identifying the Type of Fluid**:
...