When a senior, licensed professional is asked to authenticate a final technical work document prepared by other licensed professional team members, the true statement is that the senior professional accepts full responsibility for the final technical document once authenticated (Option B). Authenticating a document implies that the senior professional has sufficiently reviewed the work and ensures its accuracy and compliance with relevant standards and regulations. It does not require the senior professional to have personally prepared the document, but they must ensure its correctness and appropriateness.