in such a business it is clear to everyone about the progress of the business and the money invested on it is surely safe and transparency is all clear to anyone
when money is invested after a duration of time as the business grows to expand the money invested can be paid back with the interest stated on the agreement. the funds received will be utilized to maximum business success
through the success of the business and the satisfaction of the creditors by physically seeing how the business is doing and as well if the investors can interview the investee about the credibility and transparency of the funding can also clear their doubt
by the returns of the creditors to the investors I.e amount of 150 USD returned per year or monthly as stated In the initial agreement
once again the solution to prove accountability and transparency in investors is just by providing proof practically to show and build the trust in your members.