Prefixes change what meaning of a word.

grammatical
semantic

Which event is an example of a hortatory, or encouraging, technique? a. a hefty fine issued for driving more than 10 miles per hour over the speed limit b. a government program that provides citizens with new job-training opportunities c. a tax imposed on people who buy motorboats with large, loud engines d. a sign in a restaurant that states “think before you smoke—secondhand smoke kills” e. a tax credit that citizens purchase electric or hybrid vehicles