Final answer:
In The Time Machine, the Time Traveller deduces that the initial food supply of the Morlocks, another human descendant species, has disappeared, and they now depend on the Eloi for sustenance.
Step-by-step explanation:
In H.G. Wells' novel The Time Machine, the Time Traveller realizes that the Morlocks' initial food supply was not each other, vermin, or a result of being omnivores; the realization is B. it's gone. The Morlocks used to feed on the Eloi, an above-ground dwelling species that are the distant descendants of humanity. As the Time Traveller explores the future, he uncovers the chilling dependency the Morlocks have on the Eloi, highlighting the evolution and division of species based on the availability of food supply.