Help Roosevelt's 'corollary' was adapted from the Monroe Doctrine to protect unstable Latin American
nations from being controlled by the European nations they owed money to. But it was soon
extended to protect:

multinational US corporations.

overseas military troops returning to the US.

diplomatic corps serving in Europe.

foreign workers in the US.

in contrast, the biological controls are self-sustaining, inexpensive and very effective once established. biological control could be used on thousands of golf course acres, improving their biodiversity and quality as wildlife habitat. in the process, the golf industry will be shown to be leaders in an environmental stewardship program of benefit not only to the lands they manage but also to the watersheds in which they exist.

a was not the right answer