The audit engagement objective is to identify vendors who might be involved in money laundering...

Comprehensive and Detailed Explanation:

One red flag for money laundering and tax evasion is when payments are routed to locations that differ from vendor headquarters or registration. Running reports on payments made to countries outside vendor locations (A) can highlight potentially suspicious transactions.

Credit overrides (B) relate to credit risk, not money laundering.

Delayed revenue recognition (C) relates to earnings manipulation.

Three-way matches (D) test procurement accuracy but not fraud schemes of this type.

Therefore, the most relevant analytic technique is Option A, which directly targets anomalies that suggest offshore routing, shell companies, or tax avoidance schemes.