Which of the following conditions is linked to physical inactivity?

Physical inactivity is a significant risk factor for several chronic health conditions, and Type 2 diabetes is particularly linked to a sedentary lifestyle. When individuals do not engage in regular physical activity, it can lead to insulin resistance, where the body's cells do not respond effectively to insulin. This resistance is a critical factor in the development of Type 2 diabetes.

Moreover, physical inactivity contributes to weight gain and obesity, which are major risk factors for this condition. Regular exercise helps in managing body weight, improving insulin sensitivity, and enhancing overall metabolic health. Those who lead an active lifestyle are more likely to maintain healthier blood sugar levels, which reduces their risk of developing Type 2 diabetes.

In contrast, while other conditions like osteoporosis, hypertension, and asthma can be influenced by physical activity levels, they are not solely dependent on inactivity to the same extent as Type 2 diabetes. For example, osteoporosis is primarily affected by factors such as calcium intake and hormonal levels, while hypertension and asthma can be influenced by stress, genetics, and environmental factors in addition to activity levels. Thus, the direct link between physical inactivity and the development of Type 2 diabetes makes this option the most appropriate choice.