Which characteristic is most closely associated with an increased probability of heart disease?

Question

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Various studies have linked high hostility levels with an increased risk for heart disease. Hostility is defined as an enduring pattern of negative attitudes, emotions, and behaviors towards others, and it is often associated with social isolation, low social support, and poor coping skills. Hostility can contribute to the development of chronic stress, which can increase sympathetic nervous system activity, elevate blood pressure, and trigger inflammation, all of which can damage the arterial walls and increase the risk of a heart attack or stroke.

Which Characteristic Is Most Closely Associated with an Increased Probability