Final answer:
The questionnaire mentioned measures concerns about dieting and overeating in a laboratory setting, focusing on people who are dieting and have distorted attitudes about eating.
Step-by-step explanation:
The questionnaire mentioned in the question is used to measure concerns about dieting and overeating in a laboratory setting, specifically focusing on people who are dieting and have distorted attitudes about eating. The correct answer from the given options is
A) EAT-26
because it is commonly used as a self-report measure of eating disorders and attitudes towards food.