This scenario directly addresses the ethical responsibility of a BCBA to respect client autonomy and the right to selfdetermination as outlined in the Professional and Ethical Compliance Code for Behavior Analysts Even if the BCBA believes further progress is possible or desirable an adult client who is of sound mind has the right to make decisions about their own services including termination Option C correctly emphasizes encouraging the client by showing progress which is a supportive and ethical approach while also respecting their decision Option A is incorrect because client rights supersede adherence to program guidelines when the client wishes to terminate especially if they are not harming themselves or others Option B is unethical as offering an even bigger reward to persuade someone to continue an intervention they wish to stop borders on coercion or bribery which undermines voluntary participation and client dignity Option D while potentially true that some regression could occur is an attempt to influence the clients decision through potential negative consequences which again disrespects their autonomy and right to choose The core principle is that clients are not obligated to continue services they no longer desire and the BCBAs role is to support not control the clients life choices