What is the number of planes passing through three non-collinear points?

Options

A. 3
B. 2
C. 1
D. 0

Explanation

To solve the problem of determining the number of planes that can pass through three non-collinear points, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Non-Collinear Points**:
- Non-collinear points are points that do not all lie on the same straight line. For three points to be non-collinear, they must form a triangle.

2. **Definition of a Plane**:
- A plane is a flat, two-dimensional surface that extends infinitely in all directions. It can be defined by three points that are not collinear.

3. **Determining the Number of Planes**:
- When we have three non-collinear points, they uniquely determine a single plane. This is because any three points that are not on the same line will always lie on one specific flat surface.

4. **Conclusion**:
- Therefore, the number of planes that can pass through three non-collinear points is **one**.

### Final Answer:
The number of planes passing through three non-collinear points is **1**.