Which of the following is a benefit of regular physical activity for children?

Regular physical activity offers numerous benefits for children, one of which is improved cardiovascular health. Engaging in physical activities such as running, swimming, or playing sports enhances heart function, improves circulation, and aids in the development of healthy arteries. These improvements contribute to overall cardiovascular fitness and can help reduce the risk of heart disease later in life.

In contrast, options related to increased screen time and decreased social interactions reflect negative outcomes rather than benefits of physical activity. Lower academic performance is also not a benefit; in fact, regular exercise has been shown to positively influence cognitive function and can lead to better academic outcomes. Therefore, the choice highlighting improved cardiovascular health rightly emphasizes a significant benefit associated with regular physical activity in children.