In the Case Designer within Pega, components such as automations and approval decisions can be tagged with a Minimum Lovable Product (MLP) release for project sizing. This helps in prioritizing development tasks: C. Automations are significant because they often represent complex backend processes that can greatly enhance the application’s efficiency and are crucial for an MLP where automated features can define product usability and appeal. D. Approval decisions are key business processes that often require careful consideration and testing to ensure they meet business requirements effectively, making them important to highlight in early releases for user acceptance and feedback.