If body temperature is too high some blood vessels increase in size and sweat glands will excrete sweat resulting in a lower body temperature these changes are an example of

The answer is -Homeostasis

The human body has the ability to maintain a constant internal environment so that every organ function properly. Maintenance of a constant internal conditions is called homeostasis. For examples, a healthy human body functions optimum at normal temperature which is 37°C. If the body temperature increases well above 37°C, then by self-regulatory process, our  body brings down temperature to the normal. This is homeostasis.

the "dirty dozen" chemicals banned in an international treaty are formally known as persistent organic pollutants, or pops. the united nations environment program provided this background on what they are and what they can do to humans and wildlife.

i hope this

it is either c or d and i know for sure it is not a or b