Fevers are caused by: a. Fibrinogen acting on the fever tissues b. Fibrinogen acting on the hypothalamus c. Pyrogen acting on the fever tissuesd. Pyrogen acting on the hypothalamus

In response to an infection, illness, or some other cause, the hypothalamus may reset the body to a higher temperature. Although the most common causes of fever are common infections such as colds and gastroenteritis, other causes include: Infections of the ear, lung, skin, throat, bladder, or kidney

ITS A