A Likely Scenario for Causing the Population Trend Shown in the Diagram

Multiple Choice

A likely scenario for causing the population trend shown in the diagram below is

A) the carrying capacity changed.
B) favorable environmental conditions caused a temporary population explosion above the carrying capacity.
C) a keystone predator was removed from the ecosystem at the point that the population began to decline.
D) primary succession began at the time when the population reached its peak.