Final answer:
The correct answer is False; the proper technique for serving dishes is to avoid placing the thumb on the flat part of the plate. Use a smaller plate, like a salad plate, according to MyPlate guidelines for better portion control and to help reduce food intake.
Step-by-step explanation:
The statement 'Serve all dishes by placing the thumb firmly on the flat edge of the plate for a secure and easy presentation' is False. The correct method of serving dishes does not involve placing the thumb on the flat part of the plate where food may be placed, as it is considered unhygienic and unprofessional. Instead, the plate should be held from the bottom or by the rim without any fingers or thumbs over the top surface where food is presented.
Relating to the concept of portion control, the MyPlate guideline suggests using a smaller plate, such as a salad plate, instead of a dinner plate. This strategy makes the same serving size of food appear larger and can help reduce food intake without causing feelings of deprivation. It's a visual trick to encourage healthier eating habits by promoting satisfaction with smaller portion sizes.