Hi there, the answer is 625 sets of twins, as 1250 “twins” occur to a singular person, so “pairs” would be 1250/2 which equals 625.
The correct answer is B.
A combination of poor nutrition and a sedentary lifestyle are leading to greater occurrences of obesity in children and adolescents. This is true, especially in first world countries like the US. Children and adolescents are not as physically active as they used to be around 20 - 30 years ago due to advances in technology. The diets tend to be high in sugar and processed food as they are cheaper and easier to buy and easier to feed the kids with.
Only commenting so the person on top gets brainlist