What must a federal agency receive from the U.

A Treasury warrant is the formal notification from the U.S. Department of the Treasury that funds have been made available to a federal agency. Agencies cannot legally obligate or expend appropriated funds until a warrant has been issued.

Apportionments and allotments come afterward in the budget execution process.

Relevant References:

Treasury Financial Manual (TFM), Volume I, Part 2

OMB Circular A-11 – Budget Execution

GAO Red Book – Appropriations Law

Answer: C. a warrant