Which of the following is a characteristic of secure code?

A characteristic of secure code is demonstrated by the authorization of user transactions. This aspect is fundamental to ensuring that only users with the appropriate permissions can perform specific actions or access certain data within the application. Adequate authorization is crucial for maintaining the integrity and confidentiality of the system's resources, thereby preventing unauthorized access and potential security breaches. Secure code architecture focuses on implementing robust authentication and authorization frameworks that validate user identities and control their access level based on roles or permissions.

Other characteristics like high performance, ease of modification, and rapid deployment, while important in the overall development and functionality of software, do not inherently relate to the security of the code itself. These aspects improve user experience and adaptability but do not address the primary concern of ensuring that the system is protected against vulnerabilities and misuse. Secure code must prioritize safeguarding data and resources over performance optimizations or ease of development, which may inadvertently expose the application to risks if not handled with sufficient security considerations.