As we know in each level of a food web a smaller quantity of energy passes, so as higher is the level less energy, to find the organism that would have the least amount of total energy available is the apex predator: Here we have cati and shrub as producers, rats insects, and lizards as primary consumers, meanwhile, roadrunner are secondary consumers, finally, we have coyotes which are the apex predator as no one else predates them. Therefore the correct option would be Coyote.
