Choose the idiom meaning to exert a decisive influence that changes the outcome:

The endorsement of the veteran senator was enough to ________ in favor of the contentious environmental infrastructure bill.

Answer and explanation

Correct answer: D. tip the scales

Answer: tip the scales. Why not the others: 'turn the tables' means to completely reverse a disadvantageous position against an opponent; 'clear the air' means to defuse tension by open discussion; 'read between the lines' means to infer unstated meanings.
  1. Step 1: Contextualize the effect: the endorsement provided the decisive advantage that tipped a balanced contest into an affirmative vote.
  2. Step 2: 'Tip the scales' (or 'tip the balance') means to give a decisive advantage or determine an otherwise evenly matched outcome.

Practise more Idiomatic Expressions and Phrasal Verbs in Formal Register.

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