All plants and animals need energy in order to survive. The diagram above shows how energy gets transferred among living things in a particular ecosystem. If all of the grasshoppers were removed from the region, which type of organism in this ecosystem would not be able to survive?
I believe it would be A, frogs and spiders, because frogs and spiders both eat grasshoppers. But I cannot see the diagram it talks about, so it's harder to tell.