Which term refers to the process of adjusting something?

The term "Einstellen" refers to the process of adjusting something. This word is commonly used in both technical and everyday contexts to describe the act of fine-tuning, calibrating, or modifying an object or system to achieve a desired state or performance. For instance, in a technical setting, it could involve adjusting the settings of a machine, while in terms of software, it could refer to configuring preferences or parameters.

The other terms relate to different concepts: "Alterung" refers to aging, "Biegen" means bending, and "Ausrichtung" translates to alignment. While they all involve some form of modification or change, "Einstellen" specifically captures the essence of adjustment in a more precise manner, which makes it the most appropriate choice for this question.