Answer:
D.neither collinear nor coplanar
Explanation:
Collinear points are points that lie on the same line.
Coplanar points are points that lie on the same plane.
R and T are on the same line; R and S are on the same line. However, R, T, S and Q are not all four on the same line, so these points are not collinear.
R, T, S and Q are also not on the same plane, so they are not coplanar.