What are nested components in the context of metadata files?

Nested components refer to components that reside within a parent metadata file, forming a hierarchical structure that organizes related configurations. For instance, in Salesforce metadata, a parent component like a Custom Object can contain nested components such as CustomFields and ValidationRules. This structure allows for a more organized and manageable way to handle related configurations, making it easier for developers and administrators to understand the relationships among different pieces of metadata.

In the context of the other options, the first choice describes components having separate configurations but does not specifically identify the hierarchical relationship that defines nested components. The third option suggests that nested components do not interact with others, which contradicts their defined relationships within the parent metadata. Lastly, the fourth choice incorrectly limits nested components to profile settings, overlooking their broader application within various metadata contexts in Salesforce. Thus, the concept of nested components is clearly illustrated by their inclusion in parent metadata files.