Multiple choice

American productivity is declining in relation to Europe's; the energy expended per unit of production in the United States is as much as twice that expended in West Germany.

  1. as much as twice that expended in West Germany

  2. as much as twice that of West Germany's expenditure

  3. up to two times of West Germany's expenditure

  4. up to two times what West Germans expended

  5. up to double the West German expenditure
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A Correct answer
Explanation

The underlined part is perfectly fine.Case of comparative. 'As much as' is the correct usage for comparing.

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