Final answer:
Sarah exceeded the recommended intake percentage of calories from total carbohydrates and greatly surpassed the recommended intake of added sugars.
Step-by-step explanation:
The question is whether Sarah met the Dietary Reference Intakes (DRI) recommendations for carbohydrate and added sugar intakes based on her consumption of 340g of carbohydrates with 100g coming from added sugars, within a total energy intake of 2,000 calories. First, since 1g of carbohydrates provides 4 calories of energy, Sarah's total carbohydrate intake was 1,360 calories (340g × 4 cal/g), which is 68% of her total energy intake, exceeding the American Heart Association's recommendation that only about 55% of calories should come from carbohydrates.
For added sugars, the DRI recommends no more than 25% of a day's energy, but more recent guidelines suggest less than 10% of daily calorie intake from added sugars. In Sarah's case, the 100g of added sugars contributed 400 calories (100g × 4 cal/g), which is 20% of her total energy intake. While this is below the older 25% recommendation, it exceeds the current guideline of less than 10%. Additionally, it greatly exceeds the American Heart Association's recommendations of no more than 100 calories from added sugars for women per day.