Uncertain about the best way to keep his new lizard alive, Jerome places a heat lamp at one end of the long lizard cage. Over several days, Jerome notices that the lizard tends to sit in a certain place when the lamp is on. The lizard's selection of a particular place to stay represents itsA) range of tolerance.B) temperature optimum.C) biotic conditioning.D) use of a limited resource

Each organism exhibits maximum growth and survival under certain values of abiotic factors. The temperature that supports maximum growth and development of a particular organism represents its temperature optimum.

The lizard in the question has selected some places where the temperature is best suited to it. The selection of the particular place to obtain the best possible temperature conditions represents its temperature optimum.