Answer:
B. Virtual reality
Explanation:
In a virtual reality context, the visual and auditory senses of the user are fed by data (images, sounds) from the computer using a goggle and earphones. That allows the person to be totally cut off her real physical environment and be totally immersed into the world (reality) managed by the computer.
Not to be confused with<u> augmented reality</u>, where the physical reality and perception of it aren't changed... but an additional layer of information is added on top of it. Like pointing your phone camera to a building and getting information about the building displayed on your phone.
Not to be rude, but this is elementary school. How would anyone know this?
Answer:
Design Phase
Explanation:
In design phase developers make prototypes. The prototype is the solution without actual implementation. That prototype is shown to the user for the purpose of getting feedback. So design phase of SDLC involves making improvements based on user feedback.
The CPU is also known as the system unit.
