GMAT Critical Reasoning (CR) | Recently the museums in Cremia were in news when one of the most visit

Recently the museums in Cremia were in news when one of the most visited and flourishing museums of Cremia was found to be using fake paintings of renowned artists. It was found in an investigation later that many of the museums resort to displaying fake paintings in order to generate revenues. The investigating officer concluded that this could stop if the public did not visit such museums.
What is the assumption that the officer makes for the conclusion to be true?

(1) Museums resort to such
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