Which contract type means the contract is available from only one source?

• A. Single-source
• B. Task-order
• C. Design-build
• D. Graduated Lease

Answer: (A)

Single-source contracts are awarded to one supplier when that supplier is the only one able to fulfill the requirement—due to unique capabilities, proprietary technology, or urgent timing. This means there’s no competitive bidding because the contract is available from only one source. The other options describe different ways of delivering or financing work rather than exclusivity: a task-order arrangement issues specific tasks under a master contract, often involving multiple vendors; design-build combines design and construction under one entity; and a graduated lease focuses on increasing lease payments over time.