To answer this question, let's go through each option to understand why it is correct or incorrect:
Option A) Requirements Analysis - This option is correct because requirements analysis is an important activity in application security. It involves identifying and analyzing the security requirements for the application, such as authentication, access control, and data protection.
Option B) Vulnerability Assessment - This option is correct because vulnerability assessment is another crucial activity in application security. It involves scanning the application for potential vulnerabilities and weaknesses that could be exploited by attackers.
Option C) Code Review - This option is correct because code review is an essential activity in application security. It involves manually reviewing the source code of the application to identify any security flaws, such as insecure coding practices, input validation issues, or vulnerabilities in third-party libraries.
Option D) All of the above - This option is correct because all of the activities mentioned above (requirements analysis, vulnerability assessment, and code review) are important components of application security. They help ensure that the application is developed and maintained with security in mind, reducing the risk of security breaches and protecting sensitive data.
Therefore, the correct answer is D) All of the above.