The correct answer is "censor" and "censoring". In the text is stated that engineers have invented something that is able to censor offensive language on live television feed. That would be a "censor", an aparatous able to detect offensive language and "censoring" is the action that this censor does.
The correct words to complete the sentence correctly is B. sensor, censoring.
A complete sentence is a sentence that has a subject and a predicate.
Hence, we can see that the correct word to complete the sentence is option B. the correct sentence will be "In recent years, engineers have invented a sensor capable of censoring offensive language from live television feeds".
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