Explanation
The GREATEST advantage of using a common vulnerability scoring system is that it helps with risk prioritization. This is because a common vulnerability scoring system provides a standardized and consistent way of measuring and comparing the severity of vulnerabilities, based on their impact and exploitability. This allows organizations to prioritize the remediation of the most critical vulnerabilities and allocate resources accordingly. The other options are not as advantageous as using a common vulnerability scoring system, because they either involve aggregating (A), eliminating C, or quantifying (D) risk, which are not directly related to the scoring system.