A Group of Ecologists Is Studying a Metapopulation of Native

A group of ecologists is studying a metapopulation of native bees.The species, an important pollinator, is on the verge of extinction.The ecologists hope to preserve and increase the population.For the greatest chance of success, they should probably focus on

A) maintaining the source population.
B) maintaining the largest sink population.
C) maintaining the smallest sink population.
D) building corridors to directly connect the sink populations.
E) decreasing movement between source and sink populations.