A scope that cannot be adjusted is referred to as what type of magnification scope?

A scope that cannot be adjusted in terms of magnification is classified as a fixed magnification scope. Fixed magnification scopes have a single, set level of magnification, meaning that the user cannot change the zoom level. This design offers a simplified user experience, as there are no adjustments to be made, which can result in improved reliability and a potentially lighter weight compared to variable magnification scopes.

In contrast, the other options involve scope designs that allow for adjustable magnification. Variable scopes can be set to various levels of magnification, accommodating different shooting distances and situations. Zoom scopes also enable users to change the magnification, often ranging across various levels. Variable power, a term synonymous with variable magnification, indicates a scope that can be adjusted rather than fixed. Thus, the designation of fixed magnification accurately identifies a scope that is restricted to one level of zoom.