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An athlete is running a marathon on a hot, dry day. Which of the following physiological responses would be most likely to occur in the athlete's body by the end of the race?
The athlete would produce dilute urine.
The athlete would have decreased blood osmolarity.
The athlete would have increased levels of antidiuretic hormone.
The athlete would secrete less epinephrine.
The athlete would have an increase in the amount of urine produced.