Which of the following is considered a sedentary activity?

Watching television is considered a sedentary activity because it involves prolonged periods of sitting with little to no physical movement. Sedentary activities typically require minimal energy expenditure and are associated with a lack of physical activity. Engaging in such activities can lead to various health risks, including obesity, cardiovascular disease, and other chronic health conditions.

The other options—running, cycling, and swimming—are all forms of physical exercise that involve active engagement of the body and promote cardiovascular health, strength, and overall fitness. These activities require movement and energy expenditure, distinguishing them from sedentary behaviors like watching television.