Which of the following is a main function of a GPU?

The main function of a GPU, or Graphics Processing Unit, is graphic rendering. The GPU is specifically designed to handle and accelerate the rendering of images, animations, and video. It processes graphical data and converts it into the output seen on the screen, performing complex calculations to quickly render 2D and 3D graphics. This capability is crucial for applications such as video games, video editing, and graphic design, where high-performance visual output is essential. The architecture of a GPU allows it to efficiently manage tasks that require parallel processing, making it significantly more effective at rendering graphics compared to a CPU, which is optimized for general tasks.

In contrast, other options reflect functions unrelated to the primary role of a GPU: data storage pertains to devices that hold information, file transfer deals with the movement of data between devices or networks, and data backup involves making copies of data for recovery purposes. These processes can involve different hardware and software components but are not the responsibility of the GPU.