From the words or group of words lettered A to D, choose the word or group of words that best completes each of the following sentences. The committee has s...

Answer Details

The correct option to complete the sentence is "on". The preposition "on" is used when referring to a topic or subject that is being discussed, investigated or reported. In this sentence, the committee submitted its report about the students' riot. Therefore, the appropriate preposition to use is "on" because it shows the subject matter that the committee's report is concerned with. The other options, "in", "for", and "about", do not convey the exact meaning that is intended in the sentence. "In" is used to indicate location within something, "for" is used to indicate a purpose or a beneficiary, while "about" is used to introduce a topic without specifying the purpose of the report.