When asking about specific questions or answers please specify the Q name and exam session (e.g. “M/J17”) – I can’t be expected to know where quotes come from (!)
I like to think of a marking scheme as an “ideas list” of key words that underlie a point that could be made – but to know what that point is and how it would need to be developed into a mark you need to read the answer. If you can’t find it in the answer it is unlikely that I would find it.