the answer is the diameter
A chord or the circle's diameter.
It is a chord and the largest chord in a circle is its diameter
The correct term for a line segment with both endpoints on a circle is a chord. The diameter of a circle is also a chord.
A diameter of a circle must pass through the center of that circle. A cord is a line segment that has its endpoints on the circumference of a circle. It can be any line segment. If that cord also passes through the center of the circle, it is said to be a diameter of that circle. A diameter of a circle is the longest cord of the circle.
It is the diameter of the circle.
This is called "diameter"