Choose the correct option for each question. There is only one correct response for each question.
Which of these surfaces is it easy to walk on?

Options

A. A floor covered with polished tiles
B. A floor covered with sandpaper
C. A floor covered with lubricant
D. A floor covered with water

Answer

To determine which surface is easiest to walk on, we need to consider the concept of friction. Friction is the force that opposes motion between two surfaces in contact. When we walk, we rely on friction to push against the ground and propel ourselves forward.

Let's analyze each option:

1. **Floor covered with polished tile**: This surface is smooth and has low friction. Walking on it can be slippery, making it difficult to maintain balance.

2. **Floor covered with sandpaper**: Sandpaper has a rough texture, which increases friction. This means that when you walk on it, you have more grip and stability, making it easier to walk.

3. **Floor covered with lubricant**: Lubricants reduce friction significantly. Walking on a lubricated surface would be very difficult as you would likely slip.

4. **Floor covered with water**: Water creates a slippery surface, which also reduces friction. Walking on a wet surface can lead to slipping and loss of balance.

Based on this analysis, the surface that provides the most friction and is therefore easiest to walk on is the **floor covered with sandpaper**.

**Final Answer**: The correct option is **B: Floor covered with sandpaper**.