Which one of the following is not a psychological stressor?

English: A sedentary lifestyle is primarily about physical inactivity and health-related behaviors and is not mainly categorized as a psychological stressor. Catastrophic events (for example, natural disasters or sudden major losses) produce acute psychological stress, trauma, and can lead to long-term mental-health consequences.

Social discrimination causes chronic stress through exclusion, stigma, and unfair treatment, increasing risks of anxiety and depression.

Poverty leads to ongoing stress because of financial insecurity and lack of resources, and is a well-known psychological stressor.

Note: While a sedentary lifestyle primarily affects physical health, reduced activity can indirectly worsen mood and mental wellbeing over time, but it is not classified in the same direct way as the other listed stressors.