Every member of a particular species is found within a certain population living in a desert. The growth of this population is limited by the availability of water in the ecosystem. The population has many food sources available to it.
This species might become extinct if
OA.
a disease eliminated one of the population's food sources
OB
a new food source was introduced to the ecosystem
OC.
food became the limiting factor for the population.
O D.
a long drought caused water to become scarce.