Which type of proposition typically describes the characteristics of an event or phenomenon?

The proposition that typically describes the characteristics of an event or phenomenon is a fact proposition. This type of proposition is focused on objective statements that can be verified or disproven through evidence or observation. For example, a factual proposition might state, "The Earth orbits the Sun," which reflects a characteristic of a natural phenomenon based on astronomical evidence.

In contrast, propositions of policy often focus on what actions should be taken or propose specific solutions to problems. Value propositions evaluate the worth or significance of something based on specific criteria, often involving subjective judgments. Assumptions are underlying beliefs or principles taken for granted without proof in a particular argument or debate. Each of these types serves different purposes in discussion and debate, but it is the fact proposition that is specifically concerned with empirical reality and the characteristics surrounding factual events or occurrences.