The issue with an application's instructions being properly translated for network components is most likely at the Application layer. Here's why:
Infrastructure layer: This layer deals with physical components (e.g., switches, routers) and is unlikely to cause translation issues.
Session layer: Responsible for establishing, maintaining, and terminating communication sessions but not directly related to application instructions.
Control layer: Not a standard OSI layer; it's likely a misnomer.
Application layer: This layer handles application-specific protocols and data. Translation issues often occur here.
Therefore, the correct answer is D. Application laye