The correct option is
B And
Option A: 'And' is a conjunction that connects phrases, clauses or words. It means 'in addition to'. It is relevant to the given sentence, connecting the words 'volcanic mountains' and 'lush green valleys'. Hence option A is correct.Option B: 'To' indicates 'a motion or direction toward a person, point or thing', or 'a range of things'.
It makes the sentence sound ambiguous. If the sentence had stopped at "lush green valleys", 'to' would also have been a suitable option. But, after these words, 'to' loses its meaning and trails off as if left incomplete. Hence option B is wrong.
Option C: 'In' means 'inclusion within a space'.
Option D: 'On' refers to the top or surface of something.
These words do not relate to the given sentence in meaning.
Hence options C and D are incorrect.