Which of the following would not transmit signals from one point to another?

The question asks which of the given options would not transmit signals from one point to another.

• a) Telephone line: A telephone line is a physical medium (usually copper wires) that transmits electrical signals for voice and data communication.
• b) Fibre optic cable: A fibre optic cable is a physical medium that transmits data as light pulses.
• c) Coaxial cable: A coaxial cable is a physical medium that transmits electrical signals, often used for television and internet.
• d) IP address: An IP address is a numerical label assigned to a device on a computer network. It is used to identify the device and its location on the network, enabling communication. It is not a physical medium or device that transmits signals itself, but rather an address used for signal transmission by other devices and media.

Therefore, the IP address does not transmit signals.

The correct option is d).
$\boxed{\text{d) IP address}}$