What type of speech will Darius deliver if given a note card on a topic to prepare for in two minutes?

Darius will deliver an impromptu speech if he is given a note card on a topic to prepare for in two minutes. Impromptu speaking is characterized by the speaker's lack of previous preparation and the need to construct a response quickly. In this situation, Darius has only two minutes to gather his thoughts and articulate them effectively, which aligns perfectly with the essence of impromptu speeches.

In contrast, persuasive, informative, and expository speeches typically require a more structured approach and in-depth preparation. A persuasive speech aims to convince the audience of a particular viewpoint, while an informative speech seeks to provide the audience with knowledge about a specific subject. An expository speech is similar to informative but focuses more on explaining or clarifying complex ideas. These types of speeches usually allow for more time and research, which is not the case in this scenario where immediate, spontaneous delivery is necessary.