In accordance with 21 CFR Part 11, in order for an electronic record to be...

21 CFR Part 11governs the use of electronic records and electronic signatures in FDA-regulated research.

21 CFR 11.10(a):Requires “validation of systems to ensure accuracy, reliability, consistent intended performance, and the ability to discern invalid or altered records.”

Validated systems ensure equivalency between electronic and paper records.

While access controls (D) are also mandated, they arepart of system validation, not the defining requirement. Printing/signing paper copies (A) is unnecessary under Part 11. Entry into an eCRF (C) is just one function, not sufficient for compliance.

Thus, the correct answer isB (Managed within a validated computer system).