Transmission Control Protocol (TCP) is a fundamental protocol in the Internet Protocol Suite. It provides reliable, ordered, and error-checked delivery of data between applications running on hosts connected via an IP network. TCP is a connection-oriented protocol that breaks data into packets and reassembles them at the destination.

- TCP is a connection-oriented protocol: TCP establishes a connection between the sender and receiver before data transmission. This connection ensures that data is delivered reliably and in the correct order. It also handles flow control, congestion control, and error recovery.

- Three-way handshake: TCP uses a three-way handshake process to establish a connection. The handshake involves three steps: SYN, SYN-ACK, and ACK. The sender initiates the handshake by sending a SYN packet to the receiver. The receiver responds with a SYN-ACK packet, and finally, the sender acknowledges the receipt with an ACK packet. This handshake ensures that both the sender and receiver are ready to transmit and receive data.

- Single stream of data: TCP treats data from the application as a continuous stream. It breaks down the stream into smaller packets and adds a header to each packet for routing and identification purposes. At the receiving end, TCP reassembles the packets into the original stream of data.

- All of the mentioned: The correct answer is option 'D' because all the statements (a, b, and c) are true. TCP is indeed a connection-oriented protocol, it uses a three-way handshake to establish a connection, and it receives data from the application as a single stream.

TCP is widely used in various applications that require reliable data delivery, such as web browsing, email, file transfer, and real-time communication. By providing reliable transmission and error recovery mechanisms, TCP ensures the integrity and accuracy of data exchanged between hosts on the internet.