Answer:
D. Contingency fee
Explanation:
A contingent fee is any fee for services provided where the fee is payable only if there is a favourable result. Although such a fee may be used in many fields, it is particularly well associated with legal practice
and generally Contingency means something that could happen or come up depending on other occurrences. An example of a contingency is the unexpected need for a bandage on a hike or something that depends on something else in order to happen.