What is the Class I mover, and why do some dairy farmers think it should be changed?

Ibelieve the answer is d.

The answer to your question is  it relieves stress and boredom.  the rest of the answer choices would be long term. 

Of that are from eating black  foods or iron supplements. the most common condition causing  it is a bleeding ulcer.  black poop caused by blood indicate a problem in the upper digestive tract.     along with pain, vomiting, or diarrhea is cause to see a doctor right go see a doctor

The answer would be b. hope this : )