The answer is B. Some monitoring, such as video surveillance in many businesses, including banks and retail stores, is to be expected as necessary in order to provide security for the businesses.
This sentence is very long and has many excess or filler words that aren't necessary for the reader's understanding of the sentence. The other sentences are more concise and maintain a stronger focus, which is how you would revise this sentence to get rid of the wordiness.
Hope this helps!