Tammy made one cash deposit each day over the span of a few weeks at...

The correct answer is C. Structuring scheme. The CFE Manual explains that structuring occurs when a person breaks up money into smaller transactions specifically designed to avoid regulatory reporting requirements or internal financial-institution controls. It notes that many countries require reporting of currency transactions above a certain threshold, such as more than $10,000, and that a common red flag is a customer making many deposits just under the reporting threshold.

That is exactly what Tammy is doing. Her repeated deposits of $9,000 to $9,900 over several weeks strongly suggest that she is intentionally keeping each transaction below the reporting threshold to avoid government scrutiny. Option D, integration, refers to a later laundering phase in which illicit money is reintroduced into the economy as apparently legitimate funds. Options A and B do not match this conduct. In money laundering cases, fraud examiners are trained to identify transaction patterns that appear deliberately calibrated to evade mandatory reporting rules. Repeated cash deposits just below a legal threshold are one of the clearest examples. Therefore, Tammy is most likely engaged in a structuring scheme, making C the correct answer.