Acomputer is two or more computers connected using software and hardware so that they can communicate with each other.

a. network
b. switch
c. broadband
d. node

Option A is the correct answer for the above question.

Explanation:

A network is said to the group of the connected computer used for the communication purpose in which information is transferring from one computer to another and vice versa. The computer is connected to a network with the help of some software or some hardware or both.

The question scenario also asked about that thing which is made for communication and being connected with the help of some software or hardware. Then the answer is a computer network that is described in the above paragraph. Hence the answer is option A  while the other option is not correct because--

whats the answer to this question

only #2 represents an object at rest on a table.

in #1, there is no normal force due to the table; the object is accelerating downward.

in #3, the vertical forces are not balanced; the object is accelerating downward.

in #4, neither the vertical nor the horizontal forces are balanced. the object is accelerating upwards and to the right.