They’re called Endorphins
The answer is A - vitamin deficiency
Answer:
Scientists are studying cause(s) and risk factors in an effort to find better ways to manage and reduce the chances of a person having ADHD. The cause(s) and risk factors for ADHD are unknown, but current research shows that genetics plays an important role. Recent studies of twins link genes with ADHD.1
In addition to genetics, scientists are studying other possible causes and risk factors including:
Brain injury
Exposure to environmental (e.g., lead) during pregnancy or at a young age
Alcohol and tobacco use during pregnancy
Premature delivery
Low birth weight
Research does not support the popularly held views that ADHD is caused by eating too much sugar, watching too much television, parenting, or social and environmental factors such as poverty or family chaos. Of course, many things, including these, might make symptoms worse, especially in certain people. But the evidence is not strong enough to conclude that they are the main causes of ADHD.
Explanation:
C - both A and B. The digestive system does those two.
Except Requirement to attend annual training events
Because simply it's part of the activities to show their commitment to the Jobs. The one that includes harassment are something like :
- Name calling ( that's not in a friendly mood)
- Sexual Harassment
- Being told to do something that's not a part of their job or get fired
