Right answer is (b) Chief Engineer
Explanation: A chief engineer is a senior engineer in an organization. Typically they are in charge of an engineering department, and duties vary considerably depending on the industry. In public works, such as for a city, county, military division, or federal program, the engineering department often has a chief engineer. This is typically shown as “Office of the Chief Engineer” in organizational charts. This person or group is separate from the other engineering offices, and functions to coordinate their activities from an engineering perspective.