Final answer:
The components of the Type A personality most closely associated with coronary heart disease are anger and hostility.
Step-by-step explanation:
Extensive research suggests that anger and hostility are the components of the Type A personality that are most closely associated with coronary heart disease. Studies have shown that individuals with high levels of anger and hostility are at a greater risk of developing heart disease and experiencing heart attacks. For example, one study found that those who indicated the highest levels of anger were over 6 times more likely to have had a heart attack by age 55 and 3.5 times more likely to have experienced heart disease by the same age.