Which method of assessing nutrition requires an individual to recall the last day's worth of food they consumed?

The method of assessing nutrition that involves an individual recalling the last day's worth of food they consumed is known as a 24-hour recall. This dietary assessment technique is commonly used in nutrition research and practice, as it allows for the collection of detailed information about an individual's dietary intake over a specific, short timeframe—typically the previous day.

The primary advantage of the 24-hour recall method is that it minimizes the potential for memory bias, as it focuses on a single day rather than requiring the respondent to remember their food intake over an extended period. This approach encourages more accurate and immediate recall of the types, quantities, and preparation methods of food consumed, leading to more reliable data on dietary patterns.

In contrast, the other methods listed serve different purposes or require different amounts of recall or interpretation. For instance, a food frequency questionnaire captures long-term dietary patterns over weeks or months by asking how often certain foods are consumed, while dietary history assesses an individual's overall eating habits and patterns over time. Portion size estimation typically involves determining the size of the food portions consumed but does not focus on specific timeframes and relies on accurate recollection of serving sizes rather than total intake over a short period.