Final answer:
A registered representative who has completed their regulatory element CE on their second anniversary in the industry is required to do it again three years from that date(option 3), according to FINRA regulations.
Step-by-step explanation:
The Financial Industry Regulatory Authority (FINRA) requires registered representatives to complete a continuing education (CE) program. This program includes a regulatory element that must be completed periodically to ensure they keep up to date with industry changes and regulations.
After a registered representative has completed their regulatory element CE on their second anniversary, they are next required to complete it three years from that date. Therefore, if a registered representative has just completed their required regulatory element CE on their second anniversary, the next time they would need to sit for the regulatory element is three years from now, which corresponds to option 3 in the provided choices.