Final answer:
The artist Salvador Dali was investigated for counterfeiting money, not Leonardo da Vinci, Michelangelo, or Vincent van Gogh.
Step-by-step explanation:
The artist investigated for counterfeiting money was Salvador Dali. None of the other artists listed, which includes Leonardo da Vinci, Michelangelo, or Vincent van Gogh, were known to be investigated for such activities.
While Leonardo da Vinci is renowned for his contributions to various fields of art and science, and the other artists left behind a legacy of influential works, there are no historical records that suggest they were involved in counterfeit money investigations.