It's Saturday, and Jessica is helping her dad fix the roof. They need to lay new shingles on one entire side, and they've been under the sun on black tar paper for 5 hours. It's a toasty 92 degrees outside, but the humidity isn't that bad—only about 40%. Jessica has been drinking lots of water and is wearing light colored, sweat-wicking clothing, but she sits down suddenly feeling like she's going to throw up. Her heart is racing. Her skin is warm and dry with no more sweat. Her dad feels her forehead, and she's burning up. What heat-related illness does Jessica have? How should she treat it?

since you have not provided the options here i   am going to give you general overview about hormone.hormone are actually the part of endocrine system in our body and produced by the endocrine glands. the hormones act like a chemical messenger   within human body. once produce by the glands they   travel through the blood stream and reach at specific or target tissue and organs   which result in control of our body function. the hormones are specific in their work and work on only the targeted tissue or organ   . with the of hormone endocrine system regulate the heart rate , metabolism, our mood and   growth as well as the development and even the sleeping cycle etc. they actually are the messenger for body cell and organs .

i think your answer is a. coordination