Answer:
AB←→
is a secant line.
Explanation:
Not a chord because a chord ends and begins on a circular arch. (on the circle edge)
Cannot be a tangent line because a tangent line never touches the inside of a line.
Cannot be the diameter because a. it is always just inside the circle and I think it is the longest line (strait in the middle)
Can only be a secant line
In geometry, a secant of a curve is a line that intersects the curve at a minimum of two distinct points. The word secant comes from the Latin word secare, meaning to cut. In the case of a circle, a secant will intersect the circle at exactly two points.