Please someone answer this

Which of the following transformations will always produce a congruent figure?

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label?

Which graph has figures that can undergo a similarity transformation to justify that they are similar? (obviously not the third one)