Some Researchers Estimate That All Saltwater Fish Will Be Extinct

Multiple Choice

Some researchers estimate that all saltwater fish will be extinct by 2048, in large part due to overfishing. But surveys also show that more households eat chicken and beef than fish; however, neither chickens nor beef are in danger of extinction. Which of the following best explains these observations?

A) The supply of fish has always been less than the supply of chicken and beef.
B) Fish tend to be nonexcludable resources, whereas chicken and beef are excludable.
C) Fish tend to be nonrival resources, whereas chicken and beef are rival.
D) The price of fish is much higher than the price of chicken and beef.