It is correct to infer that "The report were conflicting." (Option C) This is because it states something contrary to what is believed. See the explanation for this below.
An inference is the submission or a conclusion that is given based on the facts derived from a text.
In this case, some people indicated that the bacteria were fairly fast in cleaning the spill.
However the report of the investigation carried out by Samantha Joye indicated otherwise.
The reports indicated that the bacteria had only cleaned only ten percent of the oil and that it would take many more years than had been postulated for the Gulf to recover from the oil spill.
Hence, it is correct to state that the report which was more factual and truthful was conflicting with the opinion of other scientists.
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