Answer: B) two intersecting planes.
Explanation:
Definitions:
A line is a one -dimensional geometric figure that extends infinitely in both directions. It has only length but no width.
The intersection of two line is a point.
A plane is a two dimensional flat surface (like a sheet of paper) and it extends infinitely . It has both length and width .
The intersection of two plane is a line.
By considering the given figure , we can easily see that the two planes ( ∵they have both length and width) are intersecting each other and the intersection is a line.
It means the correct answer regarding the given diagram : B) two intersecting planes.