What is the purpose of the "trim" function?

The trim function is specifically designed to remove parts of elements within a graphic that overlap or intersect with other elements. When you have two lines or shapes that cross each other, using the trim function allows you to eliminate the portions of one element that extend beyond the intersection, effectively tidying up the design and creating a cleaner visual composition. This is particularly useful in graphic design to eliminate unwanted overlaps and ensure that lines or shapes fit together correctly, enhancing the overall aesthetic and functionality of the design.

In contrast, the other options represent different graphic design operations. Making a symmetrical copy of an image pertains to duplication and mirroring techniques, transforming a 2D shape into a 3D model relates to dimensional modeling, and creating a hollow structure involves operations like offsetting or subtracting to change the internal structure. Each of these functions serves different purposes in graphic design, demonstrating the versatility of graphic communication tools.