Final answer:
Technological change and sedentary lifestyle are constraining factors that may limit flexibility and contribute to obesity.
Step-by-step explanation:
The constraining factors that may limit flexibility include technological change and sedentary lifestyle leading to obesity. With technological advancements, people are becoming more sedentary, spending more time on screens and less time engaging in physical activities. This lack of physical activity can lead to weight gain and obesity. Additionally, as food costs increase, it may become more difficult for individuals to afford nutritious foods, leading to a higher consumption of unhealthy options.