Geometry

The answer is B.Coplanar Points.

Analyze each option:

A.Midpoints: A midpoint is a point that divides a line segment into two equal parts. There is no indication in the relationship between points O, M, and R that any of them is a mid - point of a segment formed by the others. So this option is incorrect.

B.Coplanar Points: Coplanar points are points that lie on the same plane. Points O, M, and R all lie on plane D. So they are coplanar points. This option is correct.

C.Colli...