Answer:
A. sharing experiences gives group members a common bond
Step-by-step explanation:
Post-traumatic Stress Disorder or PTSD is a health condition that interferes with a person's normal functioning in life. This is caused by a frightening event that an individual may have seen or experienced.
Support groups provide therapy to the person suffering from PTSD. It gives him a form of validation that he's not suffering alone. People in the group understand what he's feeling because they, too, are experiencing it. This gives all of the group members a common bond and helps them overcome negative effects of the disorder.