Which is true about the suspension of work or stop work orders?

The assertion that stop work orders can be issued for a reasonable period of time is accurate. Stop work orders are typically utilized in federal contracting to temporarily halt work on a contract for various reasons, such as changes in government needs, budget constraints, or issues that require assessment before proceeding. The requirement that these orders be for a "reasonable period of time" ensures that while work may be paused, it does not lead to undue delays for the contractor or hinder the overall project timeline. This guideline helps maintain a balance between the government's needs and the contractor's capability to manage its resources efficiently.

Other options are not correct: for instance, stop work orders do not require unanimous agreement; they can be issued unilaterally by the contracting officer. Also, they can be applied to a variety of contract types, not just cost-reimbursement contracts. Lastly, stop work orders are indeed applicable to construction contracts, contrary to the implication that they are not. These principles govern the implementation and implications of stop work orders within federal contracting regulations.