Answer :
The sentence that should be revised to reduce wordiness is: The speech that the computer science expert gave regarding online data mining was filled with information and was also very entertaining. Thus, option B is the correct option.
To reduce wordiness, the sentence can be simplified by eliminating unnecessary repetition and streamlining the structure. One possible revision could be: "The computer science expert's speech on online data mining was informative and entertaining."
This revision maintains the essential information about the speech and conveys it more succinctly, removing redundant phrases and reducing unnecessary wordiness.
Thus, option B is the correct option.
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B) The speech that the computer science expert gave regarding online data mining was filled with information and was also very entertaining