Here are the main points for an informative speech about UFOs: I. Roswell, New Mexico, has been the focus of intense speculation about UFOs since a msyterious aircraft crased there in 1947. II. Area S-4 of Nellis Air Force range in Groom Lake, Nevada, is believed by some people to be a scene of UFO activity. III. Other places known for reported UFO activity include Wisconsin, Alabama, and upstate New York. These main points are arranged using a organizational pattern

Spatial

Explanation:

'Spatial Organizational Pattern' is described as the organizational structure in which the different information is arranged pertaining to the physical space. Such organizational pattern is primarily employed when the

In the given informative speech regarding the UFOs, the author adopts a 'spatial organizational pattern' as he organizes the information on the basis of how they fit into the physical space so that the key points aligned to distinct locations('Roswell, New Mexico', 'Groom Lake, Nevada', 'Wisconsin, Alabama, and upstate New York') can survive independently.

the answer that is correct is the last option.