A corporation agrees to purchase a deceased shareholder's stock at a set price and the shareholder's heirs agree to sell it to the corporation. What type of agreement is this?

A split-dollar plan is a life insurance arrangement where the employer and employee share the costs and benefits of a life insurance policy. This option does not pertain to the transfer of stock ownership upon a shareholder's death but is instead focused on the financial arrangement between the employer and the insured employee.

A key person agreement involves life insurance taken out on essential employees or owners of a business to protect against financial losses due to their unexpected departure. This agreement does not address the transfer of stock from a deceased shareholder to the corporation, making it irrelevant to the question.

An executive bonus plan is a strategy used to provide additional compensation to key executives, typically in the form of bonuses or supplemental life insurance. Like the other incorrect options, it does not involve the buyout of a deceased shareholder's stock and is unrelated to the transfer of ownership.