Question

the black - footed ferret is a highly specialized predator that depends on prairie dogs for survival. prairie dogs make up more than 90% of the black - footed ferret’s diet, and prairie dog burrows provide ferrets with dens to raise their young, as well as a means to escape from predators and harsh weather. ferret habitat largely coincided with the habitats of the black - tailed prairie dog (c. ludovicianus), gunnison’s prairie dog (c. gunnisoni), and the white - tailed prairie dog (c. leucurus). despite significant recovery successes over the last decade, the black - footed ferret remains one of the most endangered animals in the world.
consider the status of the black - footed ferret. what is the most logical contributing factor to its endangered status?
a the exponential growth of ferret predator populations.
b human encroachment that has greatly reduced the prairie dog populations.
c the growing habitat range of the prairie dog populations throughout the united states.
d climatic change that has significantly modified the climate of the central united states.

Explanation:

The black-footed ferret is highly dependent on prairie dogs (over 90% of diet, burrows for shelter/raising young). A key threat to dependent species is the decline of their main resource. Human encroachment (e.g., habitat destruction, poisoning) reduces prairie dog populations, directly impacting ferret survival. Other options are less logical: exponential predator growth isn’t mentioned, growing prairie dog habitat would help (not harm), and climate change isn’t linked to their dependency as directly as prairie dog decline from human activity.

Answer:

B. Human encroachment that has greatly reduced the prairie dog populations.