Which of the following is not an example of a communication channel?
a. television
b. internet
c. letters
d. traveling

The correct answers is option D

Explanation:

In Physics, a communication channel is referred to a  physical transmission medium through a  multiplexed medium such as a radio channel, computer networks, telecommunications etc.  

Common form of communication channels are  

•Face-to-Face Communication

•Broadcast Media  

•Mobile Communications  

•Electronic Communications Channels

•Written Communication Methods

answer

procedural programming, object-oriented programming

explanation

procedural programming is a type of computer programming language that specifies a series of well structured steps and procedures   within its development period of time. it contains a systematic order of statements, functions and commands to complete a computational task or program. it is centered on creating procedures. while object oriented programming is a programming language that is centered on creating objects rather that actions and data rather than logic.. it has four principles which are inheritance, polymorphism, abstraction and encapsulation

amplitude

hope this