For a project aimed at informing a broad, general audience of all ages and knowledge levels about winter sports, the best presentation type would be:
A documentary that includes images and video clips of popular winter sports, accompanied by commentary that explains their origins and development.
This format effectively combines visual and auditory elements, making it engaging and accessible for various age groups and knowledge levels. It allows for a deeper understanding of the subject matter through informative commentary, and the use of images and video clips helps to illustrate the various sports in action.