A computer that processes individually distinct discrete data of 0's and 1's that can be counted is.......

Analog computer
Hybrid computer
Batch system
Digital computer

Digital computer

A computer performance can become slow because of

Running several application software at the same time
Printing document at a low resolution

Running several application software at the same time is one factor that can slow down a computer's performance. Each application requires processing power, memory, and other resources, and running multiple applications simultaneously can strain the system resources, leading to a slower performance.

Printing a document at a low resolution, on the other hand, might not necessarily affect the computer's overall performance directly. It primarily affects the quality of the printed output rather than the computer's processing speed or responsiveness.

The correct answer is a Digital computer.