Final answer:
Based on the Cuber and Harroff (1966) study, marriages vary in levels of commitment, communication patterns, and interaction styles.
Step-by-step explanation:
Based on the Cuber and Harroff (1966) study of marriage types, it would be safe to conclude that marriages vary in levels of commitment, communication patterns, and interaction styles (option C). The study found that there are different types of marriages based on how couples handle conflict and make decisions. Some marriages are characterized by high levels of commitment and effective communication, while others may have lower levels of commitment and less effective communication.