<span>a current study on the effects of stress on the body published by a medical journal
This would be the best source because it is the most current, least subjective, and most reliable. Since it is not personal experience or reaction, but based on medical tests, it would be the most accurate. Also, textbooks can be outdated so since this is current, it would add to the accuracy. </span>
Explanation:
It is that china has eveything it needs which means britain. He plan a trip to create trade agreement
Invaluable means value less scan means scanning
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