If you have a good idea that yout want everyone to know about, how would you go about
telling people?

have a public speech

Explanation:

if it works then you can raise awareness to the point that you two can cause change to the core

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.

letter a is the answer