Risk assessment should be repeated at regular intervals because:

Risk assessment is a vital part of information risk management, and it is important to perform this process at regular intervals for several reasons. The key rationale for choosing the option about business threats constantly changing is that risk landscapes are not static; they evolve due to various factors such as technological advancements, shifts in business operations, new regulations, or emerging threats.

As businesses adapt to market changes and technological innovations, the environment in which they operate can introduce new vulnerabilities, altering the risk profile. By regularly conducting risk assessments, organizations can identify these new threats and vulnerabilities in a timely manner, allowing them to implement appropriate controls and mitigate risks effectively.

This proactive approach ensures that risk management practices remain relevant and effective, ultimately protecting organizational assets and data integrity against any emerging challenges. It underscores the necessity of viewing risk management as a continuous process that adapts to a dynamic environment, rather than a one-time evaluation that might soon become outdated.

While the other options touch on valuable points—addressing omissions from previous assessments, the versatility of methodologies, and raising security awareness—they do not capture the urgent need to adapt to changing threats. The continuous evolving nature of risks in the business environment is the primary driving force behind the necessity for regular risk assessments.