The Thermal Neutral Zone of a Homeothermic Animal Is

Multiple Choice

The thermal neutral zone of a homeothermic animal is

A) the temperature range at which conductive heat gain and convective heat loss are equal.
B) the temperature range at which psychrophilic and thermophilic enzymes are both operating.
C) the temperature range at which the metabolizable energy intake equals metabolizable energy output.
D) the temperature range over which the metabolic rate does not change.
E) None of the choices are correct.