A. Everyday social life is impossible without interpersonal relationships.
B. The root of many misunderstandings has been cited in poor relations among individuals.
C. Assuming the above to the true, social life will be much better if people understand the importance of good interpersonal relations.
D. A study reveals that interpersonal relations and hence, life in general can be improved with a little on the art of individuals.
In statement (A) is given that, everyday social life is impossible without interpersonal relationships. This is a purely subjective matter as for many people it is the opposite. Hence it is a judgment. In sentence (B) the word ‘cited’ is employed, which is a veritable fact. Hence Fact. In sentence(C), it is a conditional clause that if assumed the above is true, something else happens. This is a classic case of Inference sentence. In sentence (D) talks about the findings in a study which is a veritable fact. Hence option (b) is the answer.