Final answer:
Jane Austen favored the story of 'Mansfield Park' over 'Emma' and 'Sense and Sensibility'.
Step-by-step explanation:
The author favored the story of 'Mansfield Park' over 'Emma' and 'Sense and Sensibility'. The author being referred to in the question is Jane Austen. It is noted in a trailer for 'Mansfield Park' that Jane Austen favored this story. 'Mansfield Park' is a novel written by Jane Austen, published in 1814.