Final answer:
To quickly install the most recent security update, select the Express settings option on the Windows Update website.
Step-by-step explanation:
To install the most recent security patch quickly on Windows, from the options listed, you would select D. Express settings. This option applies to the Windows Update service and allows for all critical updates and security patches to be downloaded and installed automatically without the need for customizing or choosing advanced options. With Express settings, the process is streamlined to quickly protect the system with the latest security measures.