UnderArticle 34(3)(a) of GDPR, if personal datais encrypted or otherwise protected, notification to data subjectsis not requiredunless the risk is high.
* Option C is correctbecauseencryption renders the data unintelligible to unauthorized parties, reducing risk.
* Option A is incorrectbecausenot all breaches require data subject notification-only those posing high risks.
* Option B is incorrectbecausethe number of affected individuals does not determine notification requirements.
* Option D is incorrectbecausenotification is based on risk assessment, not supervisory authority requests alone.
References:
* GDPR Article 34(3)(a)(No notification required if encryption makes data inaccessible)
* Recital 86(Notification is necessary only if data loss poses a significant risk)