Which of the Following Conditions Is the Most Likely Indicator

Multiple Choice

Which of the following conditions is the most likely indicator of a population in an extinction vortex?

A) The population is geographically divided into many populations.
B) The species in question is found only in small, stable pockets of its former range.
C) The effective population size of the species falls below 500.
D) Genetic measurements indicate a loss of genetic variation over time.
E) The population is connected only by corridors.