Final answer:
The best example of performance criteria is the statement about the patient eating 75% of each meal without nausea due to its quantifiable and specific nature.
Step-by-step explanation:
The outcome statement that contains the best example of performance criteria is: The patient will eat 75% of each meal without complaint of nausea. This statement is quantifiable and provides a specific and measurable goal, which allows for clear assessment of whether the objective has been met. In contrast, the other statements are less specific in terms of measurement, such as 'turn herself in bed' or 'understand how to use crutches,' which do not provide a numerical or unambiguous standard of success.