Final answer:
The estimated number of teaspoons of sugar consumed is b. 10 teaspoons.
Step-by-step explanation:
To estimate the number of teaspoons of sugar consumed, we need to convert the calories from the soft drink to teaspoons of sugar. One teaspoon of sugar is equivalent to 16 calories. Therefore, to find the number of teaspoons, we divide the total calories by 16:
160 calories ÷ 16 = 10 teaspoons
So, if you drink a 12-ounce soft drink with 160 calories and then refill the cup halfway and drink that, you would have consumed approximately 10 teaspoons of sugar.