In Angular's dependency injection, what is the difference between a service provided in 'root' and one provided in a module?
- Services provided in 'root' are lazy-loaded, while those in a module are eager-loaded
- Services provided in 'root' are singletons, while those provided in a module are scoped to that module
- Services provided in 'root' cannot have dependencies, while those in a module can
- Services provided in 'root' have wider accessibility, while those in a module are private
When a service is provided in the 'root' of an Angular application, it becomes a singleton. This means there's only one instance of the service for the entire application. Services provided in a module are scoped to that module, creating a new instance for each module that imports it.
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