Which of the following is true regarding unauthorized dissemination?

Unauthorized dissemination refers to the act of revealing classified information without proper authorization, and it can include both intentional and accidental disclosures. Option B accurately captures this aspect by specifically highlighting that unauthorized dissemination relates to the accidental disclosure of classified information. Instances of unauthorized dissemination can occur due to human error, negligence, or a failure to adhere to established protocols regarding the handling of classified materials, illustrating the broad nature of the term beyond just malicious intent.

Other options do not accurately reflect the nature of unauthorized dissemination. For example, it is not limited to malicious acts; it can also occur unintentionally, which is why emphasizing the accidental aspect is critical. Likewise, while secure communications and standard operating procedures are fundamental concepts in the protection and management of classified information, they do not relate directly to what unauthorized dissemination entails.