Choice of Words
"Motivate" is a strange choice of words here. What the teacher was looking for was "justify" or even "explain." They can't be mad that the student quite literally motivated their answer! All they did was follow the prompt.
Guac With Ice, Anyone?
The waitress came up to the table and asked them what they would like to start off with. After everyone had ordered, one person asked if they could also have a glass of ice and some guac. This was the result. No, the person did not order them to be together.