The correct approach must adhere to the company's requirement that prohibits direct access to production systems and mandates all log analysis to be performed in a dedicated monitoring account. Option A suggests using VPC flow logs, which do not capture the actual packet data but rather metadata about the traffic, making it unsuitable for debugging the specific issue with the pricing service's responses. Option B proposes setting up traffic mirroring and packet inspection within the production environment, which violates the company's policy against direct access to production systems. Option D involves logging into the production EC2 instance to capture data, which also violates the company's policy. Option C is the correct choice as it configures traffic mirroring to capture the necessary UDP data and uses a packet inspection package on a new EC2 instance in the monitoring account, thus adhering to the company's requirements by not directly accessing production systems and performing log analysis in the dedicated monitoring account.