Final answer:
Box 10 on the 2016 Form W-2 is correctly matched with its use: Nonqualified plans.
Step-by-step explanation:
The correct match for the box on the 2016 Form W-2 is:
A. Box 10--Nonqualified plans
Box 10 on the Form W-2 is used to report any amounts distributed or deferred from a nonqualified plan or a Section 457(b) plan. Nonqualified plans are usually employer-sponsored retirement plans that do not meet the requirements of a qualified plan under the Internal Revenue Code.