What layer is responsible for handling error correction and data flow control?

The transport layer is responsible for handling error correction and data flow control. It ensures reliable communication between hosts by providing mechanisms to detect and correct errors that may occur during data transmission. This layer establishes and maintains a logical connection between the sender and the receiver, allowing for the retransmission of lost or damaged packets. Additionally, the transport layer manages the flow of data to prevent overwhelming a receiver by regulating the amount of data sent at any given time.

In contrast, other layers serve different functions: the link layer primarily focuses on local network data transmission without concern for error correction and flow control beyond the immediate link, the network layer is tasked with routing data from the source to the destination across multiple networks, and the application layer provides network services to end-user applications without managing the underlying transport mechanisms. Thus, the transport layer's specific functions make it the correct choice for this question.