The first stage in the life cycle is called: -prenatal.

-early childhood.

-middle childhood.

-infancy.

Infancy

Explanation:

From birth to age three, early childhood includes infancy and the toddler years. The remaining years of childhood are from the ages of four to eight, and this is when children start kindergarten. During this period of life, a variety of significant physiological and emotional changes occur.

as the gila monster consumes the eggs or young of the desert cottontail and gambel's quail, thus its main food supply is only accessible for a restricted time duration every year. however, for this, the gila monsters exhibit three adaptations, which elevate their survival rate in the desert condition.  

first, is that they possess huge bodies, and can consume greater concentrations of food during a small period. secondly, they require to feed infrequently as they can accumulate fat in their tails. ultimately, their rate of metabolism is very low, so that they can burn their reservoirs of fat gradually.