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Answer:
15/100
Step-by-step explanation:
If we use the surface of the water as our frame of reference, then Christy's vertical position could be represented by -12 ft.
When the dilation is centered on the origin, you can multiply each of the individual coordinates by the scale factor.
All the coordinates are ±5 and the scale factor is 1/5. Multiplying those gives ±1. The only selection with all coordinates being ±1 is
.. Selection A.
You can check to see if the signs agree in detail. (They do.)