Answer: D
Step-by-step explanation:
The correct answer is D because it is perfectly defining the term ''input''. In a shorter and simple way, the input is considering something that is put in or taken in. Also, it is representing something that is operated on by any process or also system.
There are two types of relations which are input value and output value.
An input is representing an independent value. On the other side, the output is representing the opposite, the output value is representing the dependent value because it is depenting on the input value.