Which rules can be applied when handling Attachment types?

The choice that encompasses all relevant rules for handling attachment types is the most comprehensive one. When managing email attachments, it is crucial to implement multiple strategies to ensure security and compliance.

Limiting file size is important because excessively large attachments can cause issues such as slowing down email delivery systems, consuming excessive storage, and increasing risk exposure due to larger payloads potentially containing malware.

Disallowing certain formats helps organizations avoid risks associated with specific file types that are more likely to harbor malware or other threats. For example, executable files and certain script formats can pose significant security risks and are often restricted.

Encrypting files is an essential practice that protects sensitive information contained in attachments from unauthorized access during transmission. Ensuring that attachments are encrypted adds a layer of security, which is particularly important for safeguarding confidential data.

By recognizing that all these rules work together to enhance security and functionality in handling email attachments, it is clear that employing a combination of these strategies provides a robust approach to managing potential risks effectively. Therefore, the comprehensive choice that includes all these individual rules is the correct answer.