What is a best practice for using the global block in playbook design?

• A. Execute code at the beginning of each run of the playbook.
• B. Declare outputs which will be selectable within playbook blocks.
• C. Import packages which will be used within the playbook.
• D. Execute custom code after each run of the playbook.

Answer: (C)

The best practice for using the global block in playbook design is to import packages that will be used within the playbook. The global block serves as a place to define items that will be accessible throughout the playbook's execution. By importing the necessary packages in this section, you ensure that all subsequent blocks can utilize those packages without needing to import them repeatedly in each individual block. This not only maintains a clean and organized structure within the playbook but also enhances efficiency, as it streamlines the code and prevents redundancy.

The other options, while they touch on aspects of playbook execution, do not align with the primary purpose of the global block as effectively as importing packages does. Executing code at the beginning of each run or after each run pertains more to specific execution logic rather than setting up a foundational environment for the playbook. Declaring outputs and selecting them in playbook blocks may involve configurations and outputs but do not utilize the global block's capabilities to their fullest extent as importing necessary libraries does.