Transformation involves changing the size and position of a rectangle.
The transformation of rectangle ABCD to other rectangle ABCD is dilation.
From the question, we understand that the size of both figures are not equal, but they are proportional.
Since the sizes are proportional but not equal, then it means the transformation is a dilation.
Hence, the correct option is (a) dilation
Read more about transformations at:
https://brainly.com/question/12530927
