Furthermore, if there is no free will there is no morality, since all things are determined and you cannot do otherwise than what you do. (There is no morality involved in the bouncing of a cue ball off of a pool table wall).
But that's the point of confusing free will with consciousness. You can experience something (that's the hot stove argument), and inference is perfectly possible for even today's computer algorithms to do (which are certainly not free). Even something as common as a virtual memory system deciding which pages to swap makes predictions/inference based on what it has seen in the past.
Morality is still a thing, much like there are worse and better paging algorithms. Think of it as mental models of how things work, much like the rest of science. In this view morality is a study of how things/consciousnesses feel.
Edit: another way to look at morality as a science is like this: assume most people genuinely don't want to cause suffering of others, and especially of themselves. But they can still cause harm by being simply wrong.
Arguably the b) version is not simple physics, but that's what I meant.
There's indeed no free will (basic physics tells us that, can be also experienced directly via LSD or meditation), but to see if there's consciousness just inflict pain onto yourself.
All this being said it's pretty clear why would humans, or any other apes, or any other species, have morals - to reduce the pain/suffering that them and others receive.