Which of the following statements about overhang areas and supports in CAD modeling is true?

The statement that supports can be added directly in slicer software without modifying the CAD model is true because modern slicing software is designed to generate supports dynamically based on the geometry of the model. When preparing a 3D model for printing, the slicer evaluates the overhangs and determines where additional support structures are necessary to ensure that the print can be completed successfully. This feature allows designers to focus on the aesthetics and functionality of the main design in the CAD model without being burdened by the need to manually create supports, which can consume considerable time and may vary between different printing technologies or materials.

This flexibility in the slicing phase is particularly beneficial as it allows for adjustments and optimizations depending on factors such as the printer settings, material being used, and specific requirements of different parts of the model. Additionally, the ability to add supports in the slicer enables users to experiment with different support configurations to find the most effective solution for their specific print job, enhancing both efficiency and print quality.