A line horizontally drawn from the center of the circle.

A. Radius

B. Axiom

C. Circumference

D. Vertex

A

CORRECT!

Correct, my little monster!

i marked that and got that wrong

The correct answer is A. Radius.

To determine the correct answer, we need to understand the terms used in the question.

1. Center of the circle: This refers to the point in the middle of the circle.

2. Line horizontally drawn: This means that the line is drawn parallel to the x-axis, with no angle or slant.

3. Radius: A radius is a line segment that connects the center of a circle to any point on its circumference. In this case, the line drawn horizontally from the center will intersect the circumference of the circle at a point, and that line segment will represent the radius of the circle.

4. Axiom: An axiom is a statement or principle that is accepted as true without proof or need for further explanation. This term is not applicable in this context.

5. Circumference: The circumference of a circle is the distance around its outer boundary.

6. Vertex: A vertex is a point where two lines or edges meet. It is commonly used in geometric shapes like triangles and polygons. However, it is not applicable in the context of a circle.

Therefore, the correct answer is A. Radius, as the line drawn horizontally from the center of the circle represents the radius of the circle.