The speaker uses a mic/microphone so that the audience can clearly hear him or her.
Four Different Types of Writing Styles: Expository, Descriptive,...
Definitions and explanations of the four types of writing: expository, persuasive, descriptive, and narrative.
Expository. Expository writing explains or informs. ...
Descriptive. Descriptive writing focuses on communicating the details of a character, event, or place.
Persuasive. ...
Narrative.
The correct answer is the last option.
To credit a source means to ACKNOWLEDGE WHERE YOU FOUND A SOURCE. In order to avoid plagiarism, the writer has to cite the sources where he found information, being the most common citation formats APA or MLA. The citation style to use will depend on the topic to discuss in the paper.