Refer to the Nutrition Facts panels for the frozen treats.
The frozen yogurt product is labeled "low-fat," but its calorie content is close to that of regular ice cream because:

a) it contains aspartame
b) it is high in saturated fat
c) it’s calcium content is higher than the other products
d) it contains 23 grams of added sugars

IT CONTAINS 23 GRAMS OF ADDED SUGARS.

Explanation: Calories are the amount of energy released when your body breaks down (digests and absorbs) food. The more calories a food has, the more energy it contains. Calories content are determined by several factors including the class of food.

Frozen yogurt labeled as "low-fat," has a calorie content close to that of regular ice cream because it contains 23 grams of added sugars in why sugar is one of the classes of food with high calorie content.