Solution: A straight line connecting two points on the circumference and passing through the center of the circle is called the diameter of the circle and O is the center of the circle Answer D is the diameter of the circle.
A - This is the radius of the circle (half the diameter, we are not looking for this)
B - This is the center of the circle (a point)
C - This is a point on the circle (also a point)
D - This is the diameter of the circle
The diameter of a circle is a line that goes from one side to the other in a circle. It is the longest straight line that can be drawn in a circle. It also goes through the center of a circle.
