In a large commercial complex there are four ways to reach the main road. One of the path has loose soil, the second is laid with polished marble, the third is laid with bricks and the fourth has gravel surface. It is raining heavily and Paheli wishes to reach the main road. The path on which she is least likely to slip is

Options

A. loose soil.
B. bricks
C. polished marble
D. gravel

Explanation

To determine which path Paheli is least likely to slip on while trying to reach the main road, we need to analyze the four surfaces based on their frictional properties, especially considering that it is raining heavily.

### Step-by-Step Solution:

1. **Identify the Surfaces**: The four paths available to Paheli are:
- Path 1: Loose soil
- Path 2: Polished marble
- Path 3: Bricks
- Path 4: Gravel

2. **Understand Friction**: Friction is the force that opposes the motion of an object. The coefficient of friction varies with different surfaces. A higher coefficient means more friction and less likelihood of slipping.

3. **Evaluate Each Surface**:
- **Loose Soil**: This surface tends to be slippery, especially when wet, as the soil can become muddy and lose its grip. Thus, the coefficient of friction is low.
- **Polished Marble**: This is a very smooth surface. When wet, it can become extremely slippery, leading to a high chance of slipping. The coefficient of friction is also low.
- **Bricks**: Bricks can provide decent grip, but when wet, they can also become slippery. The coefficient of friction is moderate, but not the best.
- **Gravel**: Gravel has a rough texture which can provide good traction. Even when wet, the irregularities in the gravel can help maintain grip, resulting in a higher coefficient of friction compared to the other surfaces.

4. **Conclusion**: Given the analysis of the four surfaces, the gravel surface is the one that provides the most friction and is least likely to cause Paheli to slip, especially in rainy conditions.

### Final Answer:
The path on which Paheli is least likely to slip is the **gravel surface** (Path 4).

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