Final answer:
The base features that can be obtained via revolving sketches include curves and surfaces, volumes, and areas.
Step-by-step explanation:
The base features that can be obtained via revolving sketches are curves and surfaces, volumes, and areas. When you revolve a 2D sketch around an axis, curves and surfaces are created. The area of the resulting shape can be calculated by finding the sum of the areas of the curves and surfaces. The volume of the shape can be calculated by integrating the areas along the axis of revolution. Therefore, the correct answer is 4) All of the above.