D is correct because SAP Readiness Check is the tool that provides sizing estimations for the "System Conversion" transition path. SAP Readiness Check is a tool that analyzes the readiness of a source system for conversion to SAP S/4HANA. It provides information on various areas, such as simplification items, custom code, data volume, and sizing. Verified :
: [SAP Readiness Check 2.0 for SAP S/4HANA]

D is correct because the sprint review is the event where the Scrum team receives formal confirmation that the user stories are completed to the satisfaction of the product owner. The sprint review is a meeting where the Scrum team demonstrates the functionality that they have built and configured in the sprint, and the product owner provides feedback and acceptance. Verified :
: [What is a Sprint Review? | Scrum.org]

According to the SAP Activate methodology for SAP S/4HANA Cloud, the Explore phase is where you collect the main attributes of the product as per the Agile definition. The main attributes of the product are the features, requirements, and user stories that describe what the product should do and how it should deliver value to the customers and stakeholders. The Explore phase involves a fit-to-standard process, where you validate the fit of your business processes to the standard SAP solution and identify any gaps or extensions that need to be addressed. You also prioritize and refine your product backlog, which is a list of user stories that represent the work needed to achieve the product vision1.

B is correct because installation and configuration requirements for selected apps are one of the things that you can find in the SAP Fiori apps reference library. The SAP Fiori apps reference library provides information on how to install and configure each app, such as required software components, backend configuration steps, and frontend configuration steps.
C is correct because related app-specific SAP Fiori design guidelines are one of the things that you can find in the SAP Fiori apps reference library. The SAP Fiori apps reference library provides links to the app-specific design guidelines that describe the user interface and interaction patterns of each app, such as layout, navigation, controls, and dialogs.
E is correct because related app recommendations based on your usage profile are one of the things that you can find in the SAP Fiori apps reference library. The SAP Fiori apps reference library provides suggestions on other apps that might be relevant or useful for you based on your role, industry, or business area.

A is correct because active participation is a key principle for designing effective workshops, as it ensures that all stakeholders are engaged and contribute to the workshop outcomes.
B is correct because fit-to-standard is a workshop design guideline that aims to minimize customizations and leverage the standard SAP functionality as much as possible. Verified :