Question

in the image two circles are centered at A the circle containing B was dilated to produce the circle containing B’ what is the scale factor of the dilation

Answer 1

The question is asking about the scale factor, and a scale factor of 1 would not change the size of the circle, so I don't think 1 is the answer.
Like antman1 said, the image isn't included here, so it's kind of difficult to figure out what the answer should be. Is there any more information you can share with us about the problem?