Why was the entire area plunged in darkness?
The correct answer for the question is Option C.
The given passage describes the heavy floods that took place In Mumbai, a decade ago, and about a person, Parth who was awarded for an incident which is described in the passage. Heavy rainfall ensured that the power failure was persistent in the area, and as it was the late in the evening, darkness was inevitable without a single bulb being lit. it is mentioned in the third line of the passage as well, where power failure Is mentioned.
Thus, as mentioned in option C, the area plunged into darkness due to power failure arising out of heavy rainfall.
The other options are not true reasons as to why darkness prevailed with reference to the passage.