Hello. You did not present the text to which this question refers, which makes it impossible for it to be answered. However, I will try to help you as best I can.
To answer this question, it is necessary that you read the student diary and the information in the museum flyer. You must identify which elements about the museum the boy describes in the diary differently, or even contrary to the information presented in the flyer, that is, both the flyer and the diary must present information about the same element, but different, contrary ways.