What does a radius of a sphere join?

a. any two points on the sphere and contains the center

b. any two points on the sphere and does not contain the center

c. any two points on the sphere

d. the center and a point on the sphere

the correct answer is d.

The radius of a sphere join refers to the (D) the center and a point on the sphere. A radius is the distance of the center point to any sides of the circle or sphere. The point on the sphere can be anywhere. The center and a point on the sphere forms a sphere join.