Assess whether the current dramatic decline in sharks is more likely the effect of background extinction or a mass extinction. (Some shark populations have dropped to just 5 percent of their former abundance over the past few decades due to overfishing.)

A. Overfishing is more similar to a mass extinction event than to background extinction, because sharks are harvested no matter how well adapted they are to their environment.
B. Overfishing is more similar to a background extinction than to a mass extinction because the decline in shark populations is happening slowly.
C. Overfishing is more similar to a background extinction than to a mass extinction because fishing is like a predator/prey interaction.
D. Overfishing is more similar to a mass extinction event than to background extinction because sharks are not well adapted to their environment.