Question

the trend of changing television screens
the advent of television redefined entertainment for many people. before television became popular, people used to watch stage plays or visit a circus during their leisure time. with the invention of radio, people understood that radio waves could be used to transmit sound from one place to another. thus triggered the thought of transmitting both images and sound through radio waves, which led to the invention of television.
the earlier television sets were huge and bulky. they had huge cathode - ray tube crt screens. these television sets could not display high quality images. propelled by advanced technology, television panels—or the screen on which viewers see images—transformed from crts to flat and thin television screens. people began to enjoy watching television because of such progress. television screens became more than just transmitters of sounds and images. they began offering better images in the form of high definition hd. soon after crt screens, liquid crystal display lcd screens took the center stage. these screens contained a liquid which helped light radiation travel from the back of the panel to the screen. in these screens, the images were vivid and more stimulating than the regular ones.
8
according to the passage, triggered means
a. blocked.
b. changed.
c. inspired.
reset

Explanation:

In the passage, it is stated that with the invention of radio (people understood radio waves could transmit sound), this led to the thought of transmitting both images and sound (which led to TV invention). So "triggered" here means inspired an idea. "Blocked" (A) doesn't fit as there's no indication of obstruction. "Changed" (B) is too vague compared to the context of inspiring a new concept.

Answer:

C. inspired