Which of the following pairs of lines in a circle cannot be parallel?

Options

A. Two chords
B. A chord and a tangent
C. Two tangents
D. Two diameters

Explanation

To determine which pairs of lines in a circle cannot be parallel, we need to analyze the different types of lines that can be drawn in a circle: chords, tangents, and diameters.

### Step-by-Step Solution:

1. **Understanding Chords**:
- A chord is a line segment whose endpoints lie on the circle.
- Chords can be drawn in various orientations and lengths within the circle.
- **Conclusion**: Two chords can be parallel if they are drawn in the same direction.
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