Which term describes changing raw materials or assembling parts to increase their usefulness?

The term that describes changing raw materials or assembling parts to increase their usefulness is known as "Form Utility." This concept refers to the transformation of physical goods into more valuable products through various processes such as manufacturing, assembly, or modification. It focuses on enhancing the utility of a product by altering its form, which directly adds value for consumers and meets their needs more effectively.

Other options describe different types of utility. For instance, "Time Utility" pertains to making a product available at the right time for consumers, while "Place Utility" involves making a product accessible at the right place. "Task Utility" is less commonly referenced but generally would relate to the usefulness derived from the completion of a specific action. Each of these terms highlights a different aspect of value creation in the marketplace, but "Form Utility" specifically addresses the transformation aspect, making it the correct answer in this context.