Final answer:
b) Fruit salad. A fruit salad is a low-calorie dessert that aligns with Barack Obama's calorie-conscious goals and can serve as a sweet treat.
Step-by-step explanation:
A low-calorie dessert that aligns with Barack Obama's calorie-conscious goals and can serve as a sweet treat is a fruit salad. Fruit salad is made up of various fruits which tend to be low in calories and high in vitamins and fiber. Fruit salads can be customized with different combinations of fruits and can be enjoyed as a refreshing and healthy dessert.