Explanation:
The chief information security officer (CISO) should ideally report to as high a level within the organization as possible. Among the choices given, the chief operations officer (COO) would have not only the appropriate level but also the knowledge of day-to-day operations. The head of internal audit and legal counsel would make good secondary choices, although they would not be as knowledgeable of the operations. Reporting to the chief technology officer (CTO) could become problematic as the CTO’s goals for the infrastructure might, at times, run counter to the goals of information security.