Final answer:
The transformation that was applied to circle Q to create circle Q is described by the rule (x, y) → (-x, -y).
Step-by-step explanation:
The transformation that was applied to circle Q to create circle Q is described by option C) (x, y) → (-x, -y).
This rule reflects a reflection across the x-axis and y-axis, which results in the circle being flipped horizontally and vertically.
For example, if the original circle Q had a point (2,3), after the transformation, the corresponding point on the new circle Q would be (-2,-3).