The center of a sphere is

A. a line segment from the center point to the surface of the sphere.
B. a fixed point equidistant from all points on the surface of the sphere.
C. a three-dimensional circle in which all points are equidistant from a fixed point.
D. the same as the base of the sphere.

Center of the Sphere is a fixed point in its interior which is equidistant from each point on sphere. Option A is not right because it says center is line segment. Option B is right as it says it is fixed and equidistant from point of surface.

Step-by-step explanation:

the formula for the equation of a circle is (x – h)2+ (y – k)2 = r2, where (h, k) represents the coordinates of the center of the circle, and r represents the radius of the circle. if a circle is tangent to the x-axis at (3,0), this means it touches the x-axis at that point.