Correct option is (b) Profile plane
To elaborate: A third plane perpendicular to both coordinate planes, and hence to the ground line, is called a profile plane. This plane is vertical in position, and may be used as a plane of projection. A projection on the profile plane is called a profile view, or end view, or sometimes edge view, and is often required in machine or other drawing when the plan and elevation do not sufficiently give the shape and dimensions.