Fifty-year-old Marvin is a very successful businessman who exhibits all the classic signs of the Type A behavior pattern. He has suffered coronary problems for the past five years but has not slowed his hectic pace. According to current research, the aspect of his Type A behavior that contributes the most to his health problems is his: A. impatience. B. sense of time urgency. C. hostility. D. competitiveness.

Option C, hostility

Explanation:

Type A personality is depicted by people who are very competitive, are always in hurry and are prone to take risks. Due to these characteristics they never do anything to improve their health. Type A personality makes a person hostile as he eat and smoke more and exercise less than other personality types. Such people are generally over weighted and have high cholesterol and blood pressure.

Hence, option C is correct