Which combination of AWS services should the company use to meet these requirements?

Explanations:

AWS Glue is a fully managed ETL (Extract, Transform, Load) service that helps in discovering and transforming data, making it essential for data processing.

Amazon QuickSight is a business analytics service that provides visualization capabilities, allowing users to create interactive dashboards from their data.

Amazon Elastic File System (Amazon EFS) is primarily a file storage service and does not directly support data discovery, transformation, or visualization.

Amazon Redshift is a data warehousing service, which can be used for analytics but is not primarily focused on data discovery or transformation like Glue.

Amazon Quantum Ledger Database (Amazon QLDB) is designed for managing and storing transaction data with cryptographic verification, not for data discovery or visualization.