Could be all of these but if I had to choose one, I would go with. Behavioral signs. Hope this helps.
The manager or highest position person present at the time of this event.
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There are many reasons why Zachary can't concentrate. He might have something on his mind that is bothering him, he could be hungry, he could not have a lot of energy. The best thing Zachary could do to help the paper not suffer is leave his desk and paper alone for about a half an hour, and maybe eat something, or just take a break. Maybe take a nap to get some energy back up so that he can get everything he needs in his paper.
Answer:
The major reason is an increased blood flow to the stomach and intestines (due to the extra work because of the food), and blood being drawn away from the brain, hence decreasing the amount of oxygen being sent to our brain, and making us drowsy.
Explanation:
Hope this helped!
Answer:
A. An increase in antibodies Explanation:
