Answer:
EF is the secant line
Explanation:
A tangent line of a circle is a line that touches the circle at any point on the circumference of the circle.
A secant line is a line that lies inside the circles . secant line crosses the circumference of the circle at two points. The secant line has not end points.
In the given diagram, secant line is EF because it has no end points and it intersects the circle at two points
EF is the secant line