Which document specifies the necessary clearance required for officer candidates?

The correct response is that the DONCAF (Department of the Navy Central Adjudication Facility) is the document that specifies the necessary clearance required for officer candidates. The DONCAF processes security clearances and suitability for prospective officers, which is critical for determining eligibility for commissioned positions in the Navy. This document outlines the procedures and requirements for background checks and the types of clearances needed based on a candidate's access to classified information.

While the other options pertain to various elements of military administration or records, they don’t serve the same purpose as the DONCAF in relation to officer candidate clearances. NAVPERS 1070 pertains to personnel records, DD Form 214 is a discharge document that summarizes a service member's military record, and OPNAV 1560/1 is generally associated with applications for Navy Officer programs rather than the specifics of clearance requirements. Thus, DONCAF is the most relevant document in addressing the necessary clearance for officer candidates.