Question

read the excerpt from the new marvel in photography by h j w dam. in all the history of scientific discovery there has never been, perhaps, so general, rapid, and dramatic an effect wrought on the scientific centres of europe as has followed, in the past four weeks, upon an announcement made to the wurzburg physico - medical society, at their december meeting, by professor william konrad röntgen, professor of physics at the royal university of wurzburg. the first news which reached london was by telegraph from vienna to the effect that a professor röntgen, until then the possessor of only a local fame in the town mentioned, had discovered a new kind of light, which penetrated and photographed through everything. this news was received with a mild interest, some amusement, and much incredulity, and a week passed. then, by mail and telegrams, came daily clear which statement correctly describes how the central idea of this excerpt is developed? it is stated directly in the beginning of the excerpt and developed throughout the text it is stated directly in the middle of the excerpt and developed in the remaining text. it is hinted at throughout the text, but the reader is expected to figure it out. it is revealed through a sequence of events and defined at the end of the text.

Explanation:

The first - sentence of the excerpt states the central idea that the announcement by Professor Röntgen had a general, rapid, and dramatic effect on European scientific centers. The rest of the text elaborates on the initial reaction to the news and its spread, thus developing this central idea.

Answer:

It is stated directly in the beginning of the excerpt and developed throughout the text