Answer:
a. Doreen's bank
Step-by-step explanation:
Since the cheque was dishonored due to the non-sufficient balance in the bank account of the doreen and betty should not feel that she was cheated so she demand doreen to make the good check
So here as per the given situtation, the holder of the check would be doreen as we considered that he is the drawer of the check
So , the option a is correct