Final answer:
The Application Layer of the OSI model is responsible for interpreting the request and determining what information is necessary to fulfill that request.
Step-by-step explanation:
The layer of the OSI model responsible for logging the message, interpreting the request, and determining what information is needed to support the request is the c. Application Layer
The Application Layer is the topmost layer in the OSI model which serves as the interface between applications and the network, ensuring that communication is possible. This layer manages protocols that directly support user applications and is in charge of issues like authentication, privacy, data syntax, and session management. Examples of application layer protocols include HTTP for web browsing, SMTP for email, and FTP for file transfers.