SAT English Practice Question

The passage begins by describing the challenges of maintaining an old and historic house. It goes on to explain that the author hopes to preserve the house by making use of its historic value. What is the author’s primary purpose in this passage?

1. A.showing how an old house can be a source of challenges.
2. B.explaining why the author is committed to preserving the house.
3. C.describing the history of the house and its significance.
4. D.arguing that historic houses should be preserved for future generations.