Question

guided practice
a species becomes extinct when ______.a. its geographical range is limitedb. its ecosystem is disturbedc. all its populations died. one population dies

Explanation:

A species is defined as extinct when there are no remaining individuals of that species anywhere on Earth. This means all of its populations across all regions have died out. A limited range (A) just means the species is restricted geographically, not extinct. A disturbed ecosystem (B) may threaten a species but does not mean it is extinct. The death of one population (D) only eliminates a subset of the species, not the entire species.

Answer:

C. all its populations die