The researcher remained ______ throughout the volatile debate, presenting empirical data without allowing personal biases to ______ her scientific judgment.

Answer and explanation

Correct answer: C. impartial ... cloud

  1. Step 1: Analyze context clues: The researcher relied on empirical data and avoided personal bias during a volatile debate.
  2. Step 2: This requires an objective demeanor ('impartial') and avoiding anything that would distort or obscure ('cloud') judgment.
Answer
impartial ... cloud.
Why not the others: 'hesitant ... clarify' implies lack of conviction; 'hostile ... justify' contradicts professional empirical presentation; 'enthusiastic ... elevate' does not fit avoiding personal bias.

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