Answer:
In the late nineteenth and early twentieth centuries, a “trust” was a monopoly or cartel associated with the large corporations of the Gilded and Progressive Eras who entered into agreements—legal or otherwise—or consolidations to exercise exclusive control over a specific product or industry under the control of a ...
because in the book Carson told that the chemicals in ADT used to kill mosquitoes were killing birds and fish
It’s B, because that’s the theme of the story
