Which statement best describes a cost-plus contract?

A cost-plus contract is characterized by the contractor being reimbursed for all project-related expenses, which can include direct costs like materials and labor, along with an additional fee that is typically a percentage of those costs or a fixed fee. This structure allows for flexibility, as it accommodates varying project costs without penalizing the contractor for unexpected expenses.

This contract type is particularly beneficial in situations where project scope is uncertain, making it challenging to precisely estimate total costs upfront. It encourages the contractor to focus on quality and thoroughness rather than merely minimizing costs to stay within a fixed budget.

In contrast, the other statements do not accurately capture the defining features of a cost-plus contract. For example, mentioning payment based on project milestones, lowest bids, or payment only upon project completion pertains to different contracting methods, each with specific characteristics and payment structures distinct from cost-plus arrangements.