Which of the following describes a requirement under the Bank Secrecy Act (BSA)?

The Bank Secrecy Act (BSA) mandates that financial institutions must report any suspicious activity that could indicate money laundering or other financial crimes. This requirement is crucial as it helps authorities identify and prevent illicit activities within the financial system. By reporting suspicious activities, institutions play a vital role in safeguarding the integrity of the banking system and assisting law enforcement efforts in combating money laundering and similar offenses.

While the other options touch on aspects of financial reporting and transaction monitoring, they do not accurately capture the essential requirement as mandated by the BSA. Notably, option A refers to reporting transactions over a specific threshold, which is crucial, but it is not the only reporting obligation under the BSA. Option B inaccurately limits customer identity verification to cash transactions alone, failing to reflect the broader regulatory expectations around customer identification for all types of accounts and transactions. Lastly, option D suggests avoiding documentation altogether, which contradicts the BSA's intent to enhance transparency and accountability in financial transactions.