Which of the following is NOT a requirement for trustees of endowment care funds?

The requirement for trustees of endowment care funds emphasizes the need for oversight and management to ensure the funds are appropriately used for the maintenance of cemetery properties.

One characteristic that is often necessary is that trustees must sign an acknowledgment, which ensures their agreement to their responsibilities and duties concerning the management of the funds. Additionally, there should be a minimum number of trustees — typically three — to promote a diversified and accountable management structure, which helps prevent any one individual from having unilateral control over the funds.

While being a resident of the state can be a common requirement, it serves the purpose of ensuring trustees have a vested interest in the local community and are subject to state laws. However, being an investor in the cemetery does not follow the same mandate; in fact, it is not a requirement for someone to be financially invested in a cemetery in order to serve as a trustee. This allowance broadens the pool of potential trustees and encourages individuals with different professional backgrounds and expertise to participate.

Therefore, the correct answer highlights that being an investor in the cemetery is not a prerequisite for serving as a trustee of endowment care funds.