Answer:
A. enlarging a figure by a scale factor of 2
Step-by-step explanation:
A rigid motion transformation is a transformation that doesn't affect the size of the figure, so examples of these transformations are reflection, translation, and rotation. Therefore, the option that doesn't describe a rigid transformation is
A. enlarging a figure by a scale factor of 2.
Because this transformation will make the figure twice the size of the original.s