Final answer:
You can request a maximum of 4 USBs when ordering a Continuity USB containing the Continuity SBM ISO.
Step-by-step explanation:
When requesting a Continuity USB to be sent to you containing the Continuity SBM ISO, you can request a maximum of 4 USBs. This information would typically be specified by the organization or service providing the USB drives.
For school or business continuity purposes, restrictions are often put in place to manage resources efficiently and to prevent misuse.
Since the question has provided multiple-choice answers, it implies there is a definitive answer to how many USBs one can request. Therefore, the answer is 'a. 4'.