To identify the statements that describe a true nutrition expert, the following options apply:
- has experience in the application of scientific methodology.
- is usually a registered dietitian.
- has extensive college coursework in nutrition.
The statement "must bear the title 'nutritionist'" is not necessarily true, as the title "nutritionist" is not a regulated term and can be used by individuals without formal training or credentials in nutrition. It does not imply expertise. Therefore, it should not be selected.