Surety bond losses are seen as preventable because the events that produce a breach of contract are to a great extent within the principal's control. Which of the following illustrates this concept? (Search Chapter 10) a. A contractor takes on too many projects and as a result cannot complete all of them. He is forced to abandon several projects. b. A contractor suffers a personnel loss when most of its workforce is hospitalized with a contagious disease. As a result, the projects cannot be completed. c. A contractor's workers' compensation premium goes down as a result of a change in state law. The contractor then expands its workforce. d. A foreman quits his job without notice, resulting in a construction delay