The condition is known as tardive dyskinesia.
I’d say c makes sense , because b is talking about what’s happening not what WILL happen ,
I can just send a picture it’s way to confusing
The concentration of CO2 would drastically increase.
Group of people could have a very specific challenge having to do with the person or the task - need to watch the same person to see how they change; Ex: some type of physical or cognitive challenge and want to see their progression
Hope this helps
