Final answer:
The museum policy that is important in determining whether or not to capitalize the collection is option C: the artifacts are held for public exhibition, education and research purposes, not for financial gain.
Step-by-step explanation:
The museum policy that is important in determining whether or not to capitalize the collection is Option C: The artifacts are held for public exhibition, education and research purposes, not for financial gain. This policy indicates that the museum's primary focus is on sharing the artifacts with the public for educational and research purposes, rather than using them as a source of profit. By capitalizing the collection, it would imply that the artifacts are being treated as a financial asset, which goes against the museum's mission as a not-for-profit organization.