Final answer:
The salad has 9 grams of sugar per serving while the raspberry sorbet has 12 grams per serving. Mrs. Wong should choose the salad for her niece with diabetes.
Step-by-step explanation:
To determine the amount of sugar per serving for each dessert, we need to divide the total sugar content by the number of servings. For the salad, which has 10 servings and 90 grams of sugar, we calculate the sugar per serving as follows: 90 grams ÷ 10 servings = 9 grams per serving. For the raspberry sorbet with 6 servings and 72 grams of sugar, the calculation is: 72 grams ÷ 6 servings = 12 grams per serving. Therefore, Mrs. Wong should choose the salad for her niece with diabetes, as it has the least amount of sugar per serving.