What DoD electronic PSI request tool was developed to support the Defense Security Service?

The correct choice is EPSQ, which stands for Electronic Personnel Security Questionnaire. This tool was specifically developed to streamline and enhance the process for individuals to submit their personal information when undergoing security clearance investigations within the Department of Defense (DoD). EPSQ ensures that the necessary data is collected in a standardized format, which helps reduce errors and improve the efficiency of the security clearance process.

EPSQ allows for electronic submissions, making it easier for applicants to fill out their information and for security officials to process applications. This modernization reflects the DoD's commitment to enhancing security protocols and improving the overall effectiveness of personnel security investigations.

The other options represent different tools or systems that do not specifically connect to the process of directly submitting personnel security information. PRISM, for example, focuses on managing information related to the Defense Security Service's investigations but is not specifically for individual questionnaire submissions. The FSO and TDPS also serve different functions related to security within the DoD but do not pertain to the specific electronic submission of personnel security questionnaires like EPSQ does.