Hmm if wanting to keep options open law does nothing much as it is not needed for any degree. Eng lit is a better choice as it is needed for an Eng lit degree as a rule. But ofc if you hate it then it’s a terrible choice haha.
What kinds of degrees are you looking at that need an essay subject without saying which one? IME a lot of degrees either state XX subject (French, Eng lit, biology, maths) or there are no specific subjects required, and it’s grades XXX. DD looked at classical civ and at the talk (at Warwick) the speaker said: “you can do this course with any A levels – though it is unusual to have applicants who have done biology, maths and chemistry.”
History surprisingly does not always (or even often) require history A level. History at Leeds, for example, has no specific subject reqs. Another random google took me to politics and IR at Bristol which does require an essay subject but these included H&SC, music, yes psychology, economics, among a very long list. But again, that’s not all unis. Even UCL just says “essay subject preferred” for pol and IR.
Tbh if psych is of interest then take it; but in and of itself if doesn’t open any specific doors. As I say, if you really want to keep more options open you are better to go for Eng lit or a modern or ancient language.
Maybe your DD should do some final research of a few possible courses to see if they are things she can see herself doing and places she might like to study. But even if she doesn’t do an essay subject and then ends up wanting to take politics, there will be places that’s possible. Uni of Nottingham for example.
I think it’s wise to be wary of trying too hard to keep doors open with A level choices. You will shut some. Lots. You can’t not. My DD took French, Eng lit and geography – great so lots of doors open. But doors shut included degrees in maths, engineering, vet med, med, dentistry, chemistry, biology, sports science …
DS took maths, bio and PE. Fab. Kept some nice doors open. And shut doors to a degree in Eng lit, Spanish, engineering (pretty much), art, some medicine schools…
I should make clear that they were more than happy to close these doors haha. But inevitably. Choosing three or even four subjects does narrow things down.