Question

what is a primary advantage of using a digital signal to send information across a great distance?
the signal gets stronger as it travels farther.
the signal quality is maintained over long distances.
the signal can be easily changed during travel.
the signal can only be stored for a short time.

Explanation:

Digital signals use discrete values, which allows them to be regenerated without loss of quality as they travel over long distances, unlike analog signals that degrade. This makes maintaining signal quality over long ranges a key primary advantage for long-distance information transmission.

Answer:

The signal quality is maintained over long distances.