Keywords I saw that frame the answer. "Internal resource constraints, "partial responsibility for application-level controls" The company does not want to give up all of the application level-controls as it would be in a SaaS. I see a comment about user data owner being a type of control. While that talks about data stewardship, it does not address security controls which are application level controls. Partial responsibility for those would mean PaaS, which is a combination of both parties. SaaS is simply use our product.
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Verifying each answer against Chat GPT, my experience, other test banks, a written book, and weighing in the discussion from all users to create a 100% accurate guide for myself before I take the exam. (It isn't easy because of the time needed, but it is doing my diligence)