Because of Depression.
Also trauma – such as physical or sexual abuse, the death of a close family member or friend, or having a miscarriage. psychological causes – such as having repeated thoughts or voices telling them to self-harm, disassociating (losing touch with who they are and with their surroundings), or borderline personality disorder.
Increase the range of motion in your joints :D
The answer is A. In General, people accomplish less when practicing good human relations
That statement is simply wrong. Human is a Social animal. We are not made to live in this world alone. That's why we have to practice good human relation.
People tend to accomplish MORE if we practice good human relations ( building connection, have a good customer service, Have a better social circle, etc)