What certification documentation must be completed with officer applications to confirm citizenship?

The correct choice is the DD Form 372, which is specifically designed for verifying citizenship during the officer application process. This form serves as an official record that confirms the applicant's U.S. citizenship status, which is a crucial requirement for commissioning as an officer. The completion of this form ensures that all applicants meet the necessary legal criteria and that their citizenship can be validated through official channels.

Other options, while they may pertain to personal identification or documentation, do not directly serve the same purpose as the DD Form 372 when it comes to confirming citizenship for military officer applications. For instance, the Social Security Card is primarily used to confirm identity and eligibility for employment, not citizenship status. The Citizenship Certificate is important for individuals who have been naturalized, but not all applicants will have this document. Meanwhile, an Application for Passport relates to travel and identification but does not inherently confirm citizenship in the context required for military applications. Overall, the DD Form 372 is the recognized and necessary documentation for establishing citizenship in this specific scenario.