what rules hall be followed in cases of improvement, loss, or deterioration of the thing during the pendency of a condition in an obligation to give? Subject is business law.

1) What rules hall be followed in cases of improvement, loss, or deterioration of the thing during the pendency of a condition in an obligation to give? 2) X has a property. He donated it to Y on March 27,19990n March 27, 2000, X incurred an obligation from Z. Can Z file an action for rescission of the donation after a judgment is rendered holding X liable'? Why