No, it isn't. They are diseases.
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)
The answer to your question is,
People who avoid them.
-Mabel <3
B) tendonitis is not a problem associated with hot weather