Tessellation Method
Select one of the following tessellation methods.
Adaptive tessellation produces a polygon with an equal number of faces for each of the finest level faces on the subdivision surface. The more refinement you’ve made to a region of the subdivision surface, the more faces the resulting polygon will have for that same region. Use Divisions Per Face to control the number of faces produced for each finest level face.
Original Object
Select what you want done with the original selected object after tessellation. Use the Original Object settings to maintain a form of construction history, as these override the global construction history settings.
Hide keeps the subdivision surface, but hides it when the polygonal surface is created. The source object can be viewed in the Hypergraph and Outliner (select Input and Output Connections), and made visible in the modeling view by using Display > Show > Show Selection or All.