The term "collinear" refers to points that lie on the same straight line. Looking at the provided figure, we can see different points and lines intersecting across two planes.

From the diagram:

• Points Y, X, and B all lie on the same straight line within one of the planes. This makes them collinear.

Thus, the correct answer is:

• Y, X, B

Would you like more details or have any questions?

Here are 5 related questions to deepen understanding:

1. What does it mean for three points to be coplanar?
2. How can you identify the intersection of two planes in a 3D diagram?
3. What is the difference between collinear and coplanar points?
4. How do we know if a point is part of a line or plane?
5. Can two lines in different planes ever be parallel?

Tip: To determine if points are collinear, always check if they align perfectly on the same straight path.