Both.

Presumably there's another 120v electric outlet for the washer not shown outside the left side of the photo?

Just to say ... presumably the 240v outlet is an outlet and not something else, the details of the socket aren't clear in the photo.

Electric dryers are cheaper to buy but cost more to run. Opposite for gas dryers. In my experience.

Heat pump. Electeix and cheaper than either of the listed options.

Thank you all!!!

I'd further say, don't assume that anything is connected and working - check it out. Gas lines or electric circuits can get removed and yet the apparent outlet is left in place.