The correct answer is C. A white elephant is a possession that is difficult to dispose of because of its cost, size, or other
undesirable qualities. In this case, the house was a white elephant because it was too expensive to maintain and the owners no longer wanted it.Option A is incorrect because a white elephant is not necessarily expensive. It could be a valuable possession that is simply difficult to get rid of.
Option B is incorrect because a white elephant is not necessarily big. It could be a small possession that is still difficult to get rid of.
Option D is incorrect because a white elephant is not necessarily a rare find. It could be a common possession that is still difficult to get rid of.