The key idea of the transformation called translation is   the object and its image have opposite orientations   the rotating of a plane about a fixed point   the object moves the plane a certain angle measure   the gliding or sliding of every point in the plane the same direction

D. The gliding or sliding of every point in the plane in the same direction.

Step-by-step explanation:

We know that 'Translation' is a rigid transformation in which the image or figure is moved in any direction'.

Now, since an image in the co-ordinate plane is formed by a number of co-ordinate points.

This means that when we translate a figure, we shift all the points responsible in making the figure in the same direction.

Hence, the key feature of a translation is the gliding or sliding of every point contributing to the figure translated in the same direction.

your answer is b ^w^ hope i