Which commercial technology commonly uses plasmas? a radio a race car a television a microwave oven?

a television is correct

The correct option is Television

In older times televisions used to use cathode ray tubes but now a days they use plasma. The principle is simple, instead of using a beam of electrons to create the lines on a TV screen, the plasma screen uses what are in effect tiny quick-acting fluorescent light cells to form a picture. But the problem is that they consume more amount of electricity for instance a 42-inch model often sucks up 200 to 500 watts, and a 60-plus-inch plasma screen can consume 500 to 600 watts.

there is no universally accepted definition of art. although commonly used to describe something of beauty, or a skill which produces an aesthetic result, there is no clear line in principle between (say) a unique piece of handmade sculpture, and a mass-produced but visually attractive item. we might say that art requires thought - some kind of creative impulse - but this raises more questions: for example, how much thought is required? if someone flings paint at a canvas, hoping by this action to create a work of art, does the result automatically constitute art?