Choice and control podcast topic
For some possible clarity on the topic or least a viewpoint of 'choice and control' would recommend a recent Zoo Logic podcast episode with guest speaker Ken Ramirez.
When c and c began as a shiny new term and process to be implemented by zoo management at AZA's behest there were questions from experienced staff that lead to frustration mostly because the messaging and interpretation was murky at best. This was partially because those handing it down didn't seem to have a good grasp and it came off as essentially "if the animal chooses to not respond they get a free pass". There was some general agreement in principle but some nuances of an individual animals behavior history were largely ignored. Could go on but I gave the podcast a listen and found it informative and hopefully so might you.