Blahdenburg’s population of flutterfish declined in the past decade, mainly because of the harmful runoff from a local factory. These fish are the primary food source of the hamrat, a medium-sized species of rodent whose numbers had suffered along with their prey’s. Yet although the factory was shut down a few years ago, the population of hamrats has continued to decline.
Which of the following, if true, most helps to explain the continued decline in the hamrat population?
【选项】
The decline in the population of flutterfish has forced hamrats to supplement their diet with other types of prey.
选项是否正确？