Final answer:
The coffin fly's evolutionary survival strategy is likely rapid reproduction, which is a common strategy among insects. This strategy allows for a large number of offspring, increasing chances of species survival. Traits that enable energy storage when conditions are unfavorable also contribute to reproductive success when conditions improve.
Step-by-step explanation:
The evolutionary survival strategy of the coffin fly is likely related to rapid reproduction. Flies, and insects in general, often employ a reproductive strategy that ensures a large number of offspring, increasing the chances of survival of the species as a whole. In cold conditions, they may divert energy from reproduction to staying alive; however, when conditions become favorable, they quickly resume high rates of reproduction.
The concept of rapid reproduction is also in line with the observations that in scenarios where energy is limited, those flies with traits that enable them to store energy rather than invest it immediately in reproduction will survive better. Thus, when resources are plentiful, energy can be quickly allocated to reproductive efforts.
While answers like mimicry and camouflage and long-distance migration are valid survival strategies for some species, they do not best describe the survival strategy of the coffin fly, which is characterized more by its reproductive patterns.