Answer:
Option B is correct .i.e., Red Curve in Figure below is described by Circle shape.
Step-by-step explanation:
Given: Figure of two cones attached by there apex in opposite direct.
To find: Name of curve that describe the red marked curve in figure.
Red Marked curve is made when green colored square plane cuts it parallel to base.
That is it is the cross section made when place cuts a cone parallel to base.
We know Circular shaped cross section we get when a cone is cut by a plane parallel to base.
Therefore, Option B is correct .i.e., Red Curve in Figure below is described by Circle shape.
