Final answer:
Age, hormonal fluctuations, and illness or infection are three factors that can cause variations in the normal range of a person's temperature.
Step-by-step explanation:
Three factors that can cause variations in the normal range of a person's temperature are:
- Age: Infants and young children may have higher baseline temperatures compared to adults.
- Hormonal fluctuations: Hormonal changes in women, such as during menstruation or menopause, can cause temporary increases in body temperature.
- Illness or infection: When the body is fighting off an infection or illness, the immune system may raise the body's temperature as a response.