Which one is correctly matched?

The correct option is Maggie Tulliver – The mill on the floss.

To understand why this is the correct match, we can analyze each of the pairings provided in the options:
1. Maggie Tulliver – The mill on the floss: Maggie Tulliver is the protagonist of George Eliot's famous 1860 novel, The Mill on the Floss. This is a correct match.
2. Heathcliff – Mansfield Park: Heathcliff is the famous protagonist and anti-hero of Emily Brontë's novel Wuthering Heights, whereas Mansfield Park is a novel by Jane Austen featuring the protagonist Fanny Price. Thus, this match is incorrect.
3. Josiah Bounderby – Wuthering height: Josiah Bounderby is a wealthy, self-made businessman in Charles Dickens's 1854 novel Hard Times, not Wuthering Heights. Thus, this match is incorrect.
4. Fanny price – Hard times: Fanny Price is the heroine of Jane Austen's 1814 novel Mansfield Park, not Charles Dickens's Hard Times. Thus, this match is incorrect.

Therefore, the only pair where the character is correctly matched with their respective novel is Maggie Tulliver from The Mill on the Floss.