Question
The Nobel Prize for physics this year is for the
discovery of the gravitational waves released by violent events in the universe such as the mergers of black holes. ________________. Since then three more detections have been made, the latest one on September 28, 2017. The discovery is due to an extremely delicate experiment. Gravitational waves were predicted by Einstein almost 100 years ago From the given options, choose the one that completes the paragraph in the most appropriate way.Solution
Solution The third sentence in the paragraph starts with ‘Since then’. So, in the second sentence, some date or event must be mentioned. No other sentence other than option 4 provides such a date or event. So, undoubtedly, option 4 is correct.
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