Question

Karen never saw London or Karen has never seen the London

Answer 1

Karen has never seen the London

Answer 2

Both of the sentences you provided are correct, but they have slightly different meanings:

1. "Karen never saw London." This sentence means that at no point in the past did Karen have the opportunity to see London. It implies that she missed the chance to visit or view London in the past.

2. "Karen has never seen the London." This sentence means that up until the present moment, Karen has not seen London. It doesn't provide information about whether she had the opportunity to see it in the past, but it emphasizes her current lack of experience regarding London.

So, the choice between these sentences depends on the specific context and what you want to convey about Karen's relationship with London.