What is defined as the transmission, emission, or reception of signs, signals, writings, images, or sounds over a distance?

Telecommunications encompasses the transmission, emission, or reception of various forms of communication, such as signs, signals, writings, images, and sounds, over distances. This field is broad and includes all types of communication technologies that facilitate the sending and receiving of information through wired or wireless means.

In telecommunications, the focus is on the infrastructure and technologies that enable these communications to occur, such as telephone lines, satellites, microwave transmissions, and the internet. This definition aligns with the correct choice because it encompasses all aspects of transmitting information over distances, regardless of the medium.

The other options represent narrower subsets or specific methods of communication. Broadcasting typically refers to the distribution of audio or video content to a dispersed audience, primarily through radio or television. Signal processing involves the manipulation and analysis of signals to improve quality or extract information, which is a component of telecommunications but does not cover the broader aspect of transmission. Data transmission specifically refers to the process of sending data over communication channels, which is again a part of telecommunications but not as comprehensive as the overarching definition.