C lies on AB
True
BA is a ray on plane P
A ray passes through the plane. In this case, the line is on the plane, not passing through. So it is not a ray.
AB + BC = AC
True.
X, Y and Z are colinear
Colinear points are part of the same line. In this question, there is no line passing through these points, so they are not colinear.
W, A and Y are coplanar:
Coplanar points are on the same plane. In this item, points A and Y are on the same plane. However, point W is not, so they are not coplanar.
