Answer:
C. According to the Manhattan Institute for Policy Research, pipelines are undoubtedly the safest way to transport petroleum products.
Explanation:
Evidence is proof of something that provides the validness of what has been claimed in an argument or discussion. This allows the person's claim to have validity, to prove the genuineness of what is proposed.
Among the sentences provided in the question, the statement that uses an expert testimony as evidence is the third option. In this statement, the claim or study by<em> "the Manhattan Institute for Policy Research"</em> is used as the basis for the claim that <em>"pipelines are undoubtedly the safest way to transport petroleum products".</em> This vouches for the validity of the claim, using the experts' opinions from the institute.
Thus, the correct answer is option C.