D). Using technical language helps the author stress the complexity of the scientific advances and technological achievements that Edison observed.
Explanation:
Language and diction play a vital role in communicating the intended message effectively to the audience and creating the desired impact.
In the given extract from 'Edison Marvels at the Magic of Electricity', the author employs a technical language to emphasize the intricacy of the scientific developments that Edison discovered. It <u>helps the author to convey the convolutions involved in these developments</u> and also to reflect Edison's intellectual ability to note such technicality. Thus, <u>option D</u> is the correct answer.
