The sentence that shows the evidence is the one that presents how the children were mistreated.
The use of textual evidence serves to prove the information presented in the text. Thus, evidence shows facts and data that show that a statement must be believed because it is true.
As you didn't show the text this question refers to, it's not possible to show the sentence that serves as evidence. However, I hope the information shown above can help you.
More information on what is textual evidence at the link:
https://brainly.com/question/375033