Why do speakers emphasize particular words and phrases? to make the language is more memorable to remind the audience of the theme to make a claim seem logical to avoid counterarguments

To make the language is more memorable.

Speakers tend to emphasize particular words and phrases in order to make the language they use more memorable. This allows the audience to remember the speech better, and to retain the main ideas in their mind. A speech with memorable language, therefore, is more persuasive.

this is b. how railways dealt with people riding the trains without paying