Answer: d. a person’s body temperature must remain precisely at its set point.
Explanation:
Homeostasis is the ability of the body to maintain a stable, equilibrium and balance in the internal environment in accordance to the changes occurring in the external environment.
Homeostasis helps in maintainace of the internal body temperature in accordance with the external temperature of the body. It helps in increasing the survival chances of the organism.
The person body temperature does not remain precisely at a set point instead follows a wide range from 97°F to 99°F. A temperature over the 100.4°F indicates the condition of fever caused by the illness or infection also the body temperature may change normally throughout the day.
The CDC suggests retesting because of the "window period." This is the length of time between exposure to HIV and when HIV shows up on a test. This can take up to three months. So if your test result is negative, protect yourself and get retested after three months.
