What happens to body temperature if the kinetic energy of molecules inside the body is increased?

When the kinetic energy of molecules inside the body increases, it directly correlates with the temperature of the body. Temperature is essentially a measure of the average kinetic energy of the molecules in a substance. Therefore, as the kinetic energy rises, the temperature must also rise. This relationship is fundamental in thermodynamics; when molecules move faster—whether due to metabolic activity, exercise, or external heat sources—the body’s temperature elevates. This is part of the body’s regulatory mechanisms, such as during exercise or fever, where increased kinetic energy leads to a rise in body temperature. Hence, an increase in molecular movement will result in an increase in temperature, making this the correct response.