The correct answer is D. Group technology brings together and organizes common parts, problems, and tasks.
Group technology (GT) is a manufacturing philosophy that groups similar parts together based on their design characteristics. This allows for the efficient production of these parts, as the same tooling, fixtures, and processes can be used for all of the parts in the group. GT can also be used to improve the quality of parts, as it allows for the identification and correction of common problems.
Option A is incorrect because automation and tool production are not necessarily related to group technology. Automation can be used in any manufacturing process, and tool production is not a specific focus of GT.
Option B is incorrect because parts and simulation analysis are not necessarily related to group technology. Parts can be analyzed using simulation, but this is not a specific focus of GT.
Option C is incorrect because documentation and analysis are not necessarily related to group technology. Documentation can be used in GT, but it is not a specific focus of GT.
Option E is incorrect because group technology does bring together and organize common parts, problems, and tasks.