Question

Digital waves carry information as a series of zeros and ones, known as binary code. Analog waves carry a continuous range of values.

Since each piece of digital information is simply a one or zero, it is possible to perfectly reproduce digital information over and over again. So a copy of the information carried by a digital wave can be identical to the original wave.

It is far more difficult to make a perfect copy of an analog wave because
A.
most analog waves have wavelengths that are too long to reproduce in copies.
B.
analog waves travel at speeds too great for modern technologies to use.
C.
the exact value of any one piece of information is not clearly defined.
D.
each individual piece of information is either a zero, a one, or a two.

Answer 1

C.

Analog signals are continuous, so their exact amplitudes/values at each point are not discretely defined; noise and small variations make perfect reproduction impossible. Digital uses discrete states (0/1), which can be perfectly distinguished and copied.