Fluid friction is also known as:

Options

A. Rolling friction
B. Sliding friction
C. Drag
D. Static friction

Explanation

**Step-by-Step Solution:**

1. **Understanding Fluid Friction**: Fluid friction refers to the resistance encountered by an object moving through a fluid (which can be a liquid or gas).

2. **Identifying the Types of Friction**: There are several types of friction, including:
- Static Friction: The friction that prevents an object from starting to move.
- Sliding Friction: The friction that occurs when an object slides over a surface.
- Rolling Friction: The friction that occurs when an object rolls over a surface.
- Fluid Friction: The friction experienced by objects moving through fluids.

3. **Recognizing Fluid Friction's Alternate Name**: Fluid friction is commonly referred to as "Drag." This term is used to describe the resistance an object experiences as it moves through a fluid.

4. **Conclusion**: Therefore, fluid friction is also known as Drag.

**Final Answer**: Fluid friction is also known as Drag.

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