ANS:C - porosity free components.

Powder metallurgy is primarily used to produce components with high precision, complex shapes, and often with intricate features. This process is particularly suitable for creating parts with complex cavities and sharp features that might be difficult or impossible to achieve using traditional machining methods. Additionally, powder metallurgy can be employed to create components that are essentially porosity-free, as the process allows for high levels of density and uniformity in the final product. However, powder metallurgy is not typically used for producing components of large size. While it can be used to create components of various sizes, it is most advantageous for small to medium-sized parts. Regarding the formation of alloys, powder metallurgy can indeed be employed to produce components from alloys whose constituents do not readily form alloys through traditional melting and casting processes. By mixing elemental powders in precise ratios, powder metallurgy enables the fabrication of components from a wide range of alloy compositions, including those that may be challenging to alloy using conventional methods. Therefore, the statement "components of such alloys whose constituents do not form alloys readily" is also accurate in the context of powder metallurgy.