The environmental advantage of cement alternatives may not be as great as initially assumed.

• Answer: C – Anna Surgenor
• Strategies Used:
  • Step 1: Focus on the statement. The key phrase here is “environmental advantage of cement alternatives may not be as great as initially assumed.” I need to find where someone is skeptical about the environmental benefits of cement alternatives.
  • Step 2: Skim Paragraph G. Anna Surgenor talks about fly ash and iron-ore slag as alternatives to cement but highlights that their environmental benefits depend on factors such as transportation and lifecycle calculations.
  • Step 3: Match with the statement. Surgenor’s comments suggest that the environmental benefits might be reduced when considering transportation, implying that the advantage of these alternatives may not be as great as expected. Therefore, the answer is C – Anna Surgenor.