C) a decrease in resting heart rate means her CV system is working more efficiently.
Think, it doesn't need to pump as often as it used to
The answer is sweat glands, not sweet glands :)
Pretty much all the other answers don't come even close for consideration. Small intestines have no way of excreting salts and water outside our body and neither do adrenal glands (these are resposible for the release of different hormones).
Answer: heat stroke
Explanation: I'm thinking that's the correct answer. Because that's the only way you can pass out if your running.
Answer: The real answer is 40 degrees.
Explanation: However thats not an option, so be safe and go for 39
