Which system allows analysts to transfer data across different security levels?

The correct choice refers to a Clinical Decision Support System (CDSS) which is designed to provide assistance to clinicians by leveraging data and knowledge that can enhance decision-making at various levels of healthcare. In contexts where data may be bound by differing security classifications, systems like CDSS often include mechanisms that allow for effective data transfer while adhering to protocols that safeguard sensitive information. This is crucial for ensuring that analysts can work with data that falls under multiple security levels without compromising security protocols or patient confidentiality.

Other systems mentioned in the options may focus on different functions. For instance, GWS, which typically refers to Ground Water Systems or Global Workstations, may not specifically address the need for cross-level data transfer in a secure manner. TAIS, or Tactical Analysis Information Systems, often pertains to military data systems and may not be designed for handling healthcare data or varying security levels effectively. Lastly, AMDPCS could represent an Advanced Micro Devices Power Control System or similar systems that might not be tailored for the secure data transition across different security classifications. Therefore, the CDSS stands out as the most relevant choice for the requirement of transferring data securely across different security levels.