Organizing the main points of a speech based on an object's structure is referred to as which of the following types of patterns?

When organizing the main points of a speech based on an object's structure, the approach specifically used is known as a spatial pattern. This pattern involves arranging information according to its physical location or layout, allowing the speaker to guide the audience through different parts of the object or space in a coherent manner. For instance, in discussing the components of a building, a speaker might explain the basement first, then the first floor, followed by the second floor, effectively taking the audience on a tour of the structure.

This organizational method is particularly effective for visual topics, since it aligns the speaker's points with the way the audience perceives the subject in a three-dimensional context. It helps create a mental picture, making it easier for listeners to follow along and retain information. The other patterns, while useful in different contexts, do not specifically address the structural aspect of an object in the same way that a spatial pattern does.