Firstly, understand the body of the passage. Secondly, the topic and thirdly give them their answers
The answer would be C, "actors", because it describes the subject "we" more thoroughly, and that is actually the function of the appositive within a sentence. "Committee" is an indirect object, "we" is a subject, and "award" is a direct object.
Answer: Hello!, the best answer to this question would be C
Explanation: The reason for this is because A and D immediately get crossed out, the author isn't summarizing the text above because the text above speaks on where you might contract E Coli. or rather how. There is also no apparent signals that steps will follow so C is your best answer.