Answer:
I also believe the sentence to be "Annie realized that Jessica was only trying to help when she said that the backpack was tacky."
Step-by-step explanation:
This brief story has for its moral the message that friends are honest with each other. To Annie's surprise, the only person who criticizes her yellow backpack - to her face, at least - is her best friend Jessica. Of course, since Annie did not see that one coming, she is offended. But she soon finds out she is being criticized behind her back by the people who claimed to like her backpack. The realization comes, then: real friends say what they truly think because, even if it hurts, they are trying to help. By lying, Jessica could make her friend happy, but would not be helping her to understand that her new item is ugly, or that people are being fake. The line that best supports the lesson Annie learned is the one that describes such realization:
"Annie realized that Jessica was only trying to help when she said that the backpack was tacky."