Bradbury's fears regarding the development and use of modern technology were _______________.
In the above mentioned passage, the most appropriate answer for completing the sentence is Option D.
The passage describes Ray Bradbury, a well known name in the circuit of science fiction and thrillers. His work, The Martial Chronicle, is what made him leap into the winds of success at the age of thirty. The middle part of the passage states as to how Bradbury used to write using heavy jargons which attracted less readers. This is when he decided to change his style to a bit liberal and won over the readers, as they found it more appealing. So, option D is the correct answer.
The other options A, B and C are not mentioned in the passage and hence cannot be considered as an answer to the given question as it is irrelevant, wrong or unsuitable.