I believe the answer is B.
Answer: Eating disorder.
Explanation:
It is a complicated condition that comes up as a results of a number of long standing behavioural issues which could be biological, interpersonal, emotional, psychological, and social. On the long run, these behavioural issues will affect the emotional, physical, and health condition of the person, it will also affect the self esteem, sense of competence and control of the individual.
The most appropriate answer would be B. There is a behavioral phenomena in humans to avoid those they see as different, but also to avoid those who are known to be diseased regardless of the threat of infection. This can lead to social isolation for those with STI, if their condition becomes known to others.
