Which area would be more useful for the industry? (Details in comments)

Hi, I'd like to see if y'all have suggestions as to which field I should work in based on this opportunity I got recently.

I've been interested in pursuing a career in the industry lately, specially fields correlate to engineering and applied physics, and because of that I contacted a professor at my uni and now I joined his research group.

He works with a Tokamak in here, studying plasma diagnosis, and there are a lot of different options I could work with, but I'd like to go to the most useful to the industry.

I could work with optical diagnosis and optical drawing, could work with the plasma inside from dealing with the carbon impurities or idk (I'm at the beginning of my course and my knowledge is very limited, I know these few details based on 1 single conversation with this professor), and all of that is just the experimental front. I could also work with the programming part or the theoretical part (not a fan)

anyways, if anyone here got experience with that, could you suggest me the best research path to migrate to industry? (or even not related to industry but something I could do to make money in the future)