Answer: d. The FTC’s Red Flags Rule
Step-by-step explanation:
The Federal Trade Commission has a Red Flags Rules that requires that financial institutions like Banks should implement a program that is capable of flagging instances of suspicious activity that could point to identity theft in the covered accounts that it holds.
This bank's customers are seeing some suspicious activity in their checking accounts which could point to a case of identity theft. The Red Flags rule could therefore be the most relevant rule to the manager's discovery.