What Does the Term "Mitigation" Refer to in Connection with Damages

Multiple Choice

What does the term "mitigation" refer to in connection with damages?

A) the calculation of lost profits in determining damages
B) the duty of the breaching party to make a damages payment as soon as practical
C) the combination of the different kinds of damages into a single dollar amount
D) the duty of a non-breaching party to make reasonable efforts to reduce damages
E) the requirement of the non-breaching party to allow the breaching party one final chance to perform the contract before being entitled to collect damages