Which of the following operations is authorized for a commercial pilot not operating under regulations of 14 CFR Part 119?

The chosen operation, aerial photography, is an activity that aligns with the privileges of a commercial pilot outside the regulations of 14 CFR Part 119. This regulation primarily governs the operation of air carriers and commercial operators engaged in scheduled air transport. Aerial photography does not fall under the constraints of these regulations, as it is typically conducted on a part-time basis or for specific projects and is not categorized as scheduled airline service.

In contrast, skydiving operations typically require adherence to specific regulatory standards that could involve Part 119 provisions, particularly if conducted on a commercial basis within a structured operation. Flight instruction is usually regulated under applicable parts that would fall within the purview of formal training operations, generally requiring adherence to higher oversight and standards. Scheduled airline service is explicitly covered by Part 119, which outlines the requirements for airlines and commercial operators involved in regular services.

Thus, the nature of aerial photography allows it to be conducted by commercial pilots without the associated regulatory requirements of airline operations, making it an authorized operation in this context.