In Flutter, ________ is used to manage the project's dependencies and versioning.

In Flutter, the 'pubspec.yaml' file is used to manage the project's dependencies and versioning. The 'pubspec.yaml' file contains information about the project, including its name, description, dependencies, and other configuration settings. By specifying dependencies in the 'pubspec.yaml' file, developers can easily manage external packages, ensuring that the project uses the correct versions of libraries and packages. Understanding how to configure 'pubspec.yaml' is essential for effective Flutter development.