What does a directional antenna do?

A directional antenna is designed to focus its signal in a specific direction, which enhances its ability to transmit and receive signals from that particular direction. This makes it highly effective for long-distance communication because it can concentrate its power and sensitivity toward a specific target, reducing interference from other directions.

Unlike antennas that broadcast and receive signals from multiple directions, a directional antenna limits its coverage to a narrower area. This focus not only improves signal strength but also helps mitigate possible interference from unwanted sources, making communication more reliable.

The other options do not accurately describe the functionality of a directional antenna. It does not broadcast and receive from multiple directions, nor does it primarily function for noise filtering or have limitations to low frequencies, making it clear why the selection highlighting its specificity of direction is correct.